So here is what’s most likely gonna happen:
The Bears will take Williams because they passed on Mahomes when they had a really high pick and needed a QB. It would effectively end a lot of careers if they stick with a mediocre Fields and Williams goes on to be a star. So they’ll do the “safe” thing and take the guy most people think is the best QB in the draft. Plausible deniability. Williams will then go on to be mediocre at best, as Bears QBs do, and Fields will find modest success with some other franchise that doesn’t give the Bears much for him.