IIRC, per Quinlan, the offer was actually extended and he was given something like 24 hours to make a decision but he was never "interviewed". That allowed him to decline the offer, remove his name from consideration and say that he had never been interviewed as a way for the institution to save face and not look like it was rejected.
And FWIW, my understanding is that these kind of negotiations are made with and through the agent as an "unofficial/official" type of deal so that the coach can say he was never offered the position....because the offer was made to the agent, etc etc. I guess we'll never know. But the point is that it does appear TStan's first choice was Whisenhunt.
Of course, I could just be remembering that incorrectly as well.