I will be shocked and impressed if it somehow comes out that Whaley actually led the search alone. There's no doubt in my mind that Russ Brandon has been all over the last two hires, and I see no reason to think he'll just keep his opinion out of this search.
In a perfect world, Whaley completes the search with his top 3 or so candidates (maybe more, not sure how this works), conducts his interviews, and doesn't have to pitch them to Brandon or Pegula until he's fairly certain who is guy is. In this perfect world he gets to conduct all the interviews alone, and only until he's made his decision, do Brandon, Pegula, etc. get to sit in on the final interview. That would be the only real way that Whaley would be able to concretely say that he got his man.