I was switching between skype, as a person replied, and twitch on my phone and wasn't paying particularly close attention to the switch at one point and magically there was a little skype icon on my twitch app I could move around and expand into the skype convo I was going to and then collapse again without ever causing the stream I was watching to go away.
Problem is I'm not entirely sure what I did to do that and I would really like to be able to have that open anytime I'm doing something in particular on my phone and chatting in skype at the same time.