Oh oh
I think we have blue catfish lover here and you hurt his feelings.
Yes, I've been told that blues forage more on live fish just like stripers. Flatheads are a live feeder too aren't they?
I've seen channel cats in gill nets suspended far up off the bottom in reservoirs going after shad, and I've caught bullheads far off the bottom too. I think I still have the scars from taking channels out of gill nets! After a day of that it looked like I had been playing with razor blades! They sure can get tangled in a gill net!
Never say never in nature. Fish are very adaptive. If they weren't their species wouldn't be around anymore and they would join the legions of extinct species from long ago.