About the time Bill O'Brien was running Rick Smith out of town (2017), O'Brien was strongly pushing Bob McNair to bring in O'Brien's personnel guy Nick Caserio. It's no secret that Bob wanted to do for O'Brien what he did for Kubiak by bringing in Kubiak's guy, Rick Smith. When Bob couldn't hire Caserio, he hired Brian Gaine. After Bob passed O'Brien brought Jack Easterby into the organization. Cal blindly waved his approval. Only those who wear tin hats would not know this.
Again no secret that Jack Easterby went to the Pats ring ceremony, and sat next to Nick Caserio. Easterby came back the next day convinced the Texans would hire Caserio, so the Texans fired Brian Gaine the next day. In typical Texans fashion, the Pats slapped tampering charges on the Texans, so Cal thought it would be a good idea, at Jack Easterby's urging, to make Bill O'Brien the GM instead. Again, only those who wear tin hats would not know this.
The following year JJ Watt and the locker room told Cal that O'Brien had to go. So, Cal fired O'Brien in-season and made Jack Easterby General Manager. The season ended on Jan. 3rd and Nick Caserio was no longer under contract with Pats. Early on Monday morning, Jan 4th, Jack Easterby was at Cal's house to tell Cal they had to fire up the jet and go to Boston to interview Nick Caserio or Nick could be on his way to Carolina. Cal did as he was told, ignored the search firm, and the next day, Tuesday, Jan 5th Cal and Jack Easterby hired Nick Caserio.
Now, you really have to live under a rock if you don't know any of this. The reason I know all of this and you don't, is I am much better informed.