One would have expected for the Bears to have a short list (5-7 or whatever makes sense), most likely (hopefully) prioritized, for their head coaching succession plan. Most candidates would already be profiled and vetted. It's a pretty tight knit community. These candidates aren't unknowns. You aren't hiring a candidate based on how they interview. You already know what they've accomplished, strengths, weaknesses, etc. The interview is to confirm what you know, confirm the fit, and hopefully they don't poop the bed.
Work down this short list, comply with the outdated Rooney Rule while it still exists, and close the deal with your top remaining candidate.
Only if I am completely unable to close the deal with this group am I then moving on and casting a wider net. This would be a terrible scenario. For this they should have a much larger group of tier 2 candidates. But I'm not interviewing all of them until I've exhausted my short list (again, dumpster fire scenario). Doing otherwise implies I don't know the league, I am not connected to the coaching community, I have no plan, and I'm the laughing stock of the league (sound like anyone?).
All I can hope for at this point is that the Bears DID have a short list but were unable to close the deal with their top candidate (Ben Johnson) until his season came to a close. They still look foolish interviewing all these candidates, but perhaps they felt they needed to do that as a stall tactic and not tip their hand that they were actually waiting for BJ. Sounds like we may know mid-week.