source/timeline viewer (shortcut Q) behavior.

I find odd the behavior:
if the source monitor and the timeline monitor are NOT ganged, you can press Q and not only you go from the Source to the timeline focus, but you also see in the decklink output the swap between the sources.
IF GANG IS ON, you don't see in output the frame swapping between source and timeline. Why? I want to keep controlling if two clips are in sync and I want to move the playhead in Gang mode on and using Q bouncing. It is not possible...
if the source monitor and the timeline monitor are NOT ganged, you can press Q and not only you go from the Source to the timeline focus, but you also see in the decklink output the swap between the sources.
IF GANG IS ON, you don't see in output the frame swapping between source and timeline. Why? I want to keep controlling if two clips are in sync and I want to move the playhead in Gang mode on and using Q bouncing. It is not possible...