Thanks for the detailed post and the information. That’s what i thought about it too. I looked into the API and in the “FOnlineUserPresence” was a comment to a function that said it would return information about the clients of a given session (or something like that). So it really seems to be that kinda stuff.
So i guess with that you can use friendlists and “is the my friend currently in a game” and things like that.
But i would still wait for a Staff answer. Maybe that would clear things up.
Thanks so far!