IOnlineSubsystemNULL GetPresenceInterface return nullptr

I’ve check the code of the IOnlineSubsystemNULL and the GetPresenceInterface method return nullptr.

Even steam return nullptr.

Therefore, I’m not sure understanding the use of the presence interface.

D.

Presence sessions don’t make much sense for OnlineSubSytemNull if they mean what I think they do.
More at What is a "Presence" Session? - Programming & Scripting - Epic Developer Community Forums
Epic staff yet to step in and confirm.