I play on Stadia. I have 2 Stadia friends, and neither was online. I have yet to even use the multiplayer aspect of BG3, and have only been playing on my own. When I jumped on today and loaded my game, I went to grab something in the other room. As I returned, I heard a someone's voice. It turned out that someone was connected to my game, and was talking through the voice chat feature. They weren't talking at me, I could just hear them talking out loud sounding as confused as I was. On reflection, perhaps I should have attempted to speak with them to clear up some of the confusion, but at the time I was in 'someone has accesses my computer without my permission and I need to end it' mode. The voice I heard was talking about BG3 things, and things specific to my character, so I am certain they were in my game. There were also voice icons at the top left of my screen, mine and theirs. All my settings in the game only permit my friends to join me in online games. This is a huge privacy concern, has anyone else had this occur? Can anyone perhaps explain this?