I can make sense of Bienemy. He's Andy Reid's guy. How do you know if an offensive coach is good if he's Andy Reid's guy? Even if he's a good coordinator, that doesn't necessarily make you an HC. There is a good chance he doesn't have what it takes to be an HC, or maybe he's just really unimpressive in the interview process.
To me, Flores is the one that makes no sense. He is a proven winner as an HC with bad QB play and not exactly a stud roster, and it appears he knows personnel too because one of the biggest divisions between him and the front office was he wanted Herbert, not Tua. The Dolphins hired him to be Belichick and he did a damn good impression and then they fired him for being Belichick and now nobody wants the closest thing to Belichick?