diff --git a/stdlib/multiprocessing/connection.pyi b/stdlib/multiprocessing/connection.pyi
index b9475c5baa49..e8366e9a8ba5 100644
--- a/stdlib/multiprocessing/connection.pyi
+++ b/stdlib/multiprocessing/connection.pyi
@@ -46,7 +46,11 @@ class Listener:
     def __init__(
         self, address: _Address | None = None, family: str | None = None, backlog: int = 1, authkey: bytes | None = None
     ) -> None: ...
-    def accept(self) -> Connection[Incomplete, Incomplete]: ...
+    if sys.platform != "win32":
+        def accept(self) -> Connection[Incomplete, Incomplete]: ...
+    else:
+        def accept(self) -> Connection[Incomplete, Incomplete] | PipeConnection[Incomplete, Incomplete]: ...
+
     def close(self) -> None: ...
     @property
     def address(self) -> _Address: ...
@@ -59,16 +63,23 @@ class Listener:
 
 # Any: send and recv methods unused
 if sys.version_info >= (3, 12):
-    def deliver_challenge(connection: Connection[Any, Any], authkey: bytes, digest_name: str = "sha256") -> None: ...
+    def deliver_challenge(connection: _ConnectionBase[Any, Any], authkey: bytes, digest_name: str = "sha256") -> None: ...
 
 else:
-    def deliver_challenge(connection: Connection[Any, Any], authkey: bytes) -> None: ...
+    def deliver_challenge(connection: _ConnectionBase[Any, Any], authkey: bytes) -> None: ...
 
-def answer_challenge(connection: Connection[Any, Any], authkey: bytes) -> None: ...
+def answer_challenge(connection: _ConnectionBase[Any, Any], authkey: bytes) -> None: ...
 def wait(
-    object_list: Iterable[Connection[_SendT_contra, _RecvT_co] | socket.socket | int], timeout: float | None = None
-) -> list[Connection[_SendT_contra, _RecvT_co] | socket.socket | int]: ...
-def Client(address: _Address, family: str | None = None, authkey: bytes | None = None) -> Connection[Any, Any]: ...
+    object_list: Iterable[_ConnectionBase[_SendT_contra, _RecvT_co] | socket.socket | int], timeout: float | None = None
+) -> list[_ConnectionBase[_SendT_contra, _RecvT_co] | socket.socket | int]: ...
+
+if sys.platform != "win32":
+    def Client(address: _Address, family: str | None = None, authkey: bytes | None = None) -> Connection[Any, Any]: ...
+
+else:
+    def Client(
+        address: _Address, family: str | None = None, authkey: bytes | None = None
+    ) -> Connection[Any, Any] | PipeConnection[Any, Any]: ...
 
 # N.B. Keep this in sync with multiprocessing.context.BaseContext.Pipe.
 # _ConnectionBase is the common base class of Connection and PipeConnection