A:AnswerNot on the same console. One can on their profile and the other can via cloud and it will work but not same xbox. Streaming straight from console is 1 to 1
A:AnswerAre you talking about adding an adapter to the inside, which would extend the actual gaming controller?
If it does work, I think you'll sacrifice securely gripping the phone while you use the adapter, since there won't be a plush contact with the controller.
Do you agree?