It is an interesting mistake. If it is not the typists fault and John said that, it brings me right full smack to the subconscious mind and how if person, who is lying, is not very very careful in his wording, that person will say things and the subconscious comes into play and things GET MIXED UP. What I think is going on here (possibly) is that there was a lot going on in that house at the time he is talking about. Say JB was killed around midnight, at 3;00 in the morning, things would have been insane. So his answer "there were a lot of people there at 3:00 in the morning to me is mixed up with the goings on at 3:00 a.m. in his home.
That is not farfetched at all. Could very well be.
And while we are at it, this is another perfect example of how stupid Larry King is. Does not even notice it.
I remember when he had a woman on who had survived a plane kidnapping by terrorists and she is shot in the head by them and you can see it on tv - it is shown. Well the woman is talking about how she is doing and Larrry the moron, breaks in and says "we want to know how it felt to get shot". The man is a blithering idiot. No wonder the Ramseys were on his show so much.