'"I'm not going to sit up here and say, 'No, it wasn't,'" a contrite-sounding Marrone said Wednesday during a news conference at the NFL Scouting Combine. "Yeah, that's definitely a big part of the learning process of wanting more time and things of that nature. You know, privately, I've talked to (Bills owner) Terry (Pegula) about that and he knows how I feel about that. I'm going to obviously keep that conversation private, but, yes, I would say absolutely (it was a mistake).'