Full disclosure: I'm not a huge Bill O'Reilly fan; he asks guests questions and then talks over them when they try to answer, pretentious in his delivery and is rather impressed with himself (although anyone who does personality/opinion talk is accused of that). But I never pegged him for sycophantic. But that appears to be the case here. Someone ambushes Hillary Clinton and rather than have that person on to discuss it, he has another Fox personality on to pile on..
And I agree with the suspected motive in this piece: O'Reilly is hoping to land a Hillary interview and is kissing her backside here to get it.