If true, I think this is terrible agenting.
You need to interview well before getting any head coaching job no matter how much interest a team shows (see Harbaugh Vikings). Every interview is great experience to take on to the next one. I think he made a mistake as a first time HC candidate by not taking advantage of the opportunity to interview. You also never know where someone in that room will be in 5 years, an impressive interview now with Carolina or Indy could be what gets him an ideal job somewhere else down the road with an executive that’s moved jobs to a different organization.