terminator12, they might ask a few questions here and there, but no regular interruption. However, I was asked specifically to move to my professional experience as well after like 15 mins of my monologue.
So I took the next 5-10 mins to go over my professional experience. I had questions coming my way then. Also, my interview was conducted by 2 people: An adcom member and a 2nd year current student. I don’t know if anybody else had the same experience.