The Oakland interview is by far the most intriguing considering the fact that it was Shanahan's first NFL head-coaching gig, which ended in a total disaster.
Locked in a power struggle with then-owner Al Davis, the two went back and forth firing assistants that the other had brought aboard. Shanahan's career eventually rebounded as an offensive coordinator in San Francisco and then in Denver, where he won a pair of Super Bowls.
And now, 25 years later, Shanahan was apparently not frustrated enough to blow off an interview with the Silver and Black. Time truly heals all wounds.
The veteran coach is going to be a fascinating wild card in this coaching search that includes plenty of big-name assistants. Depending on the offensive staff he's able to put together, he may end up being the most logical choice for a few teams, including Buffalo.