

Yea, I couldn’t tell you the specifics. I know new members of group chats don’t see any previous messages. I think it might re-negotiate the keys every time someone is added. It’s probably not meant to scale up to very large groups (tho I’ve never tried), but I’ve noticed no issues in 25ish people chats.
If Chromebooks are anything to go by, if google had their way you’d only be allowed to search prescreened questions they think are best for you. Can’t have you experiencing anything not advertiser friendly.