Yeah I have a full capture card setup running through my PC.As long as Titans are protected in their bubble, I'm a-ok with this observation.
Depends if you're streaming directly to your computer and then outputting that through Twitch. You can't have overlays through the actual PS4 streaming, and an avatar you can upload through your settings on twitch. As for getting overlays, there's probably guides out there that uh, tell you how to display one through OBS or something
Edit-top of page post!