diff --git a/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=false).symbols b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=false).symbols
new file mode 100644
index 0000000000000..53045141a745d
--- /dev/null
+++ b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=false).symbols
@@ -0,0 +1,49 @@
+//// [tests/cases/compiler/multipleBaseInterfaesWithIncompatibleProperties2.ts] ////
+
+=== multipleBaseInterfaesWithIncompatibleProperties2.ts ===
+// https://github.com/microsoft/TypeScript/issues/62569
+
+namespace http {
+>http : Symbol(http, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 0, 0))
+
+  export interface TcpSocketConnectOpts {
+>TcpSocketConnectOpts : Symbol(TcpSocketConnectOpts, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 2, 16))
+
+    port: number;
+>port : Symbol(TcpSocketConnectOpts.port, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 3, 41))
+  }
+
+  export interface AgentOptions extends Partial<TcpSocketConnectOpts> {
+>AgentOptions : Symbol(AgentOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 5, 3))
+>Partial : Symbol(Partial, Decl(lib.es5.d.ts, --, --))
+>TcpSocketConnectOpts : Symbol(TcpSocketConnectOpts, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 2, 16))
+
+    keepAlive?: boolean | undefined;
+>keepAlive : Symbol(AgentOptions.keepAlive, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 7, 71))
+  }
+}
+
+namespace tls {
+>tls : Symbol(tls, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 10, 1))
+
+  export interface ConnectionOptions {
+>ConnectionOptions : Symbol(ConnectionOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 12, 15))
+
+    port?: number | undefined;
+>port : Symbol(ConnectionOptions.port, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 13, 38))
+  }
+}
+
+interface AgentOptions extends http.AgentOptions, tls.ConnectionOptions { // error under exactOptionalPropertyTypes
+>AgentOptions : Symbol(AgentOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 16, 1))
+>http.AgentOptions : Symbol(http.AgentOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 5, 3))
+>http : Symbol(http, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 0, 0))
+>AgentOptions : Symbol(http.AgentOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 5, 3))
+>tls.ConnectionOptions : Symbol(tls.ConnectionOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 12, 15))
+>tls : Symbol(tls, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 10, 1))
+>ConnectionOptions : Symbol(tls.ConnectionOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 12, 15))
+
+  maxCachedSessions?: number | undefined;
+>maxCachedSessions : Symbol(AgentOptions.maxCachedSessions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 18, 73))
+}
+
diff --git a/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=false).types b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=false).types
new file mode 100644
index 0000000000000..7f6a9849b4098
--- /dev/null
+++ b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=false).types
@@ -0,0 +1,38 @@
+//// [tests/cases/compiler/multipleBaseInterfaesWithIncompatibleProperties2.ts] ////
+
+=== multipleBaseInterfaesWithIncompatibleProperties2.ts ===
+// https://github.com/microsoft/TypeScript/issues/62569
+
+namespace http {
+  export interface TcpSocketConnectOpts {
+    port: number;
+>port : number
+>     : ^^^^^^
+  }
+
+  export interface AgentOptions extends Partial<TcpSocketConnectOpts> {
+    keepAlive?: boolean | undefined;
+>keepAlive : boolean | undefined
+>          : ^^^^^^^^^^^^^^^^^^^
+  }
+}
+
+namespace tls {
+  export interface ConnectionOptions {
+    port?: number | undefined;
+>port : number | undefined
+>     : ^^^^^^^^^^^^^^^^^^
+  }
+}
+
+interface AgentOptions extends http.AgentOptions, tls.ConnectionOptions { // error under exactOptionalPropertyTypes
+>http : any
+>     : ^^^
+>tls : any
+>    : ^^^
+
+  maxCachedSessions?: number | undefined;
+>maxCachedSessions : number | undefined
+>                  : ^^^^^^^^^^^^^^^^^^
+}
+
diff --git a/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=true).errors.txt b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=true).errors.txt
new file mode 100644
index 0000000000000..6eb7241db278d
--- /dev/null
+++ b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=true).errors.txt
@@ -0,0 +1,30 @@
+multipleBaseInterfaesWithIncompatibleProperties2.ts(19,11): error TS2320: Interface 'AgentOptions' cannot simultaneously extend types 'AgentOptions' and 'ConnectionOptions'.
+  Named property 'port' of types 'AgentOptions' and 'ConnectionOptions' are not identical.
+
+
+==== multipleBaseInterfaesWithIncompatibleProperties2.ts (1 errors) ====
+    // https://github.com/microsoft/TypeScript/issues/62569
+    
+    namespace http {
+      export interface TcpSocketConnectOpts {
+        port: number;
+      }
+    
+      export interface AgentOptions extends Partial<TcpSocketConnectOpts> {
+        keepAlive?: boolean | undefined;
+      }
+    }
+    
+    namespace tls {
+      export interface ConnectionOptions {
+        port?: number | undefined;
+      }
+    }
+    
+    interface AgentOptions extends http.AgentOptions, tls.ConnectionOptions { // error under exactOptionalPropertyTypes
+              ~~~~~~~~~~~~
+!!! error TS2320: Interface 'AgentOptions' cannot simultaneously extend types 'AgentOptions' and 'ConnectionOptions'.
+!!! error TS2320:   Named property 'port' of types 'AgentOptions' and 'ConnectionOptions' are not identical.
+      maxCachedSessions?: number | undefined;
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=true).symbols b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=true).symbols
new file mode 100644
index 0000000000000..53045141a745d
--- /dev/null
+++ b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=true).symbols
@@ -0,0 +1,49 @@
+//// [tests/cases/compiler/multipleBaseInterfaesWithIncompatibleProperties2.ts] ////
+
+=== multipleBaseInterfaesWithIncompatibleProperties2.ts ===
+// https://github.com/microsoft/TypeScript/issues/62569
+
+namespace http {
+>http : Symbol(http, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 0, 0))
+
+  export interface TcpSocketConnectOpts {
+>TcpSocketConnectOpts : Symbol(TcpSocketConnectOpts, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 2, 16))
+
+    port: number;
+>port : Symbol(TcpSocketConnectOpts.port, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 3, 41))
+  }
+
+  export interface AgentOptions extends Partial<TcpSocketConnectOpts> {
+>AgentOptions : Symbol(AgentOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 5, 3))
+>Partial : Symbol(Partial, Decl(lib.es5.d.ts, --, --))
+>TcpSocketConnectOpts : Symbol(TcpSocketConnectOpts, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 2, 16))
+
+    keepAlive?: boolean | undefined;
+>keepAlive : Symbol(AgentOptions.keepAlive, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 7, 71))
+  }
+}
+
+namespace tls {
+>tls : Symbol(tls, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 10, 1))
+
+  export interface ConnectionOptions {
+>ConnectionOptions : Symbol(ConnectionOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 12, 15))
+
+    port?: number | undefined;
+>port : Symbol(ConnectionOptions.port, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 13, 38))
+  }
+}
+
+interface AgentOptions extends http.AgentOptions, tls.ConnectionOptions { // error under exactOptionalPropertyTypes
+>AgentOptions : Symbol(AgentOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 16, 1))
+>http.AgentOptions : Symbol(http.AgentOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 5, 3))
+>http : Symbol(http, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 0, 0))
+>AgentOptions : Symbol(http.AgentOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 5, 3))
+>tls.ConnectionOptions : Symbol(tls.ConnectionOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 12, 15))
+>tls : Symbol(tls, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 10, 1))
+>ConnectionOptions : Symbol(tls.ConnectionOptions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 12, 15))
+
+  maxCachedSessions?: number | undefined;
+>maxCachedSessions : Symbol(AgentOptions.maxCachedSessions, Decl(multipleBaseInterfaesWithIncompatibleProperties2.ts, 18, 73))
+}
+
diff --git a/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=true).types b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=true).types
new file mode 100644
index 0000000000000..7f6a9849b4098
--- /dev/null
+++ b/tests/baselines/reference/multipleBaseInterfaesWithIncompatibleProperties2(exactoptionalpropertytypes=true).types
@@ -0,0 +1,38 @@
+//// [tests/cases/compiler/multipleBaseInterfaesWithIncompatibleProperties2.ts] ////
+
+=== multipleBaseInterfaesWithIncompatibleProperties2.ts ===
+// https://github.com/microsoft/TypeScript/issues/62569
+
+namespace http {
+  export interface TcpSocketConnectOpts {
+    port: number;
+>port : number
+>     : ^^^^^^
+  }
+
+  export interface AgentOptions extends Partial<TcpSocketConnectOpts> {
+    keepAlive?: boolean | undefined;
+>keepAlive : boolean | undefined
+>          : ^^^^^^^^^^^^^^^^^^^
+  }
+}
+
+namespace tls {
+  export interface ConnectionOptions {
+    port?: number | undefined;
+>port : number | undefined
+>     : ^^^^^^^^^^^^^^^^^^
+  }
+}
+
+interface AgentOptions extends http.AgentOptions, tls.ConnectionOptions { // error under exactOptionalPropertyTypes
+>http : any
+>     : ^^^
+>tls : any
+>    : ^^^
+
+  maxCachedSessions?: number | undefined;
+>maxCachedSessions : number | undefined
+>                  : ^^^^^^^^^^^^^^^^^^
+}
+
diff --git a/tests/cases/compiler/multipleBaseInterfaesWithIncompatibleProperties2.ts b/tests/cases/compiler/multipleBaseInterfaesWithIncompatibleProperties2.ts
new file mode 100644
index 0000000000000..2d85de4f27e32
--- /dev/null
+++ b/tests/cases/compiler/multipleBaseInterfaesWithIncompatibleProperties2.ts
@@ -0,0 +1,25 @@
+// @strict: true
+// @noEmit: true
+// @exactOptionalPropertyTypes: true, false
+
+// https://github.com/microsoft/TypeScript/issues/62569
+
+namespace http {
+  export interface TcpSocketConnectOpts {
+    port: number;
+  }
+
+  export interface AgentOptions extends Partial<TcpSocketConnectOpts> {
+    keepAlive?: boolean | undefined;
+  }
+}
+
+namespace tls {
+  export interface ConnectionOptions {
+    port?: number | undefined;
+  }
+}
+
+interface AgentOptions extends http.AgentOptions, tls.ConnectionOptions { // error under exactOptionalPropertyTypes
+  maxCachedSessions?: number | undefined;
+}