If you look at your Teams activity feed, you might notice some notifications automatically generated because “you might be interested.” The suggested and trending notifications are intended to drive user engagement, which is nice, but experienced users who already have a busy activity feed might want to disable these notifications.
No one likes to be disturbed when they’re concentrating on something important, which is why Teams has a Do Not Disturb presence. But we all have people who are important to us, and that’s why the priority access list exists. Even when you’ve set Do Not Disturb, notifications from people on the priority access list get through. The notifications might break your concentration, but they might also tell you about something important (or not, as the case might be).