Actually, I think that a real features for chat would be the ability to allow "different speeds":

- some questions requires "urgent" answers (for example: missing info in a meeting)

- some interactions may be processed "in the flow", during the day, when time is available

- some interactions are "human noise", people just chatting

Right now, with teams & others, everything may be "urgent" so you'll have to check and see (so interrupting your work)

Moreover, when it's not urgent, you may decide to answer later... and just forget it (because it's not a new message anymore)

So maybe that's a place where AI could help: show only what's urgent... and reminds at a later time for other kinds of chats

Just an idea