My husband went to his interview morning of the 6th (late night for me), he was the last to be called. He was questioned by indian female and then later by american female. soooo many questions

, he had just renewed his passport and they wanted to see his old passport (he left in the hotel room), they wanted to see ration card and/or voter card, he said he didnt have them with him (left in hotel), and then he was told to go have lunch and return at 3pm. when he returned he was the only one there, they called him up same interviewer and he handed the voter card, and old passport to her and she was surprised so she marked that off the paper (she had originally told him he had to take them to the VFS office, I guess this is 221G and by handing the documents then he didnt have to take to VFS now). I was called at 247am (317pm IST) I was asked many many questions about family (mine and his), names of parents (both) kids (his and mine), knowlege of previous marriages (both divorced prior), about the wedding, honeymoon, where we traveled both times I was there hotels we stayed (I have had little sleep all night long, so many interuptions, so much worry, but all our answers were honest and the same. Then after interview my husband says he was given back his passport and 221g form with nothing marked on it and was told there is an "administrative review" and they would call him to take his passport to VFS he would not have to return to Chennai.
Now will some one please tell me why the AR now when all documents have been given that were requested? what else are they going to do? how long do we have to wait?
sorry I posted this in the wrong forum...should be CR-1