It will look like "email" notification/thread ? Probably will make sense if is like an private group chat. Public will be read only ( no auth ), and private is read write with auth.
Discussion
good idea. I suppose I should rely on other tools that focus on the chat / social use-case, as users are more likely to receive notifications using other clients.
I did think about making the proposal / issue page appear more like a chat than a news feed.