

Yes and yes.
You can have multiple communities with the same name in different instances, and not necessarily about the same subject.
You can also have not only the same display name as multiple other users, but even the same username, if not in the same instance.
Since his acquisition shenanigans started, I felt like that was like a spoiled billionaire kid who didn’t get the reverence he thought he deserved from a waiter, then proceeded to buy the restauran chain just to close it.