I have to agree. I think a lot of the attraction of the show is due to what is certainly a hard and fast "Greta Rule": One person at a time is allowed to talk.
O'Reilly and Hannity go by a related rule: Everybody gets to talk anytime they want.
I also think she is an excellent interrogator. She asks good, tough questions and is fair to her interviewee whether it be Sarah Palin or Chuck Shumer. And honestly, I am unable to determine which side of the aisle she personally sits.
I thought it was they talk continuously and guests may only interject if the host pauses for a breath.