This probably makes me a weirdo, but I watched part of one Bears game this year, and watching Caleb Williams chew on his mouthguard and continue holding it between his teeth during plays instead of wearing it about drove me crazy. It bothered me so much I googled the rules and they are not even required to wear them, which made him chewing on his even more annoying. At least Mahomes wears his while he’s playing.
I predict Williams is going to swallow his during a sack someday and they’ll have to do the Heimlich on him.