My DD2 is a chaterbox when its just us and I struggle sometimes on those days when I'm tired and would kill for 5 minutes peace but I don't ever ask her to stop talking. I will try and find her something to distract her, but I really don't like ignoring her or telling her not to talk to me. I am frequently asking my girls to speak more quietly, especially when we're out, but I think that's a different issue.

In terms of interrupting though, I think 2.5 is old enough to start learning that you need to wait your turn to speak, and not talk over everybody. Unless its one of my kids telling me someone's arm has fallen off or they desperately need the toilet, then they know to wait until whoever has finished speaking, and then say "excuse me". They don't always get it right, especially if they're really excited about something, but if they interrupt they are asked to wait for a minute.

I was always raised with pretty strict rules and while I have no recollection of what I thought of them at the time, I am very grateful for them now.