It’s pretty clear a room without a 40 minute limitation means there are people who remain in the room, increasing the probablity that you might actually be able to see and chat with from either of the two community sites.
However, some people can be rude, especially if someone has their TV on etc. So the plan is to be able to continue having extended period rooms with a host available to mute someones microphone, in case they’ve wondered off, fallen asleep and can’t mute their microphone themselves, please let the host know, if they’re not already aware.