I will give an example 2 overwatch players playing Together as dpss one of them own his chanel with very high viewers he wants to inclode his friend as a stremer so he gives him a code that allows him to stream with him at the same time at the same chanel and the viewers can swap between them when ever they want without any porblems.
So 2 Friends playing you can watch both screens at the same time or choose one of them the swap between them easily. Also I would like for you to give the viewer the option to lower or turn of the volume of either the game or the streamer.