I looked up the rule and I see it does talk about “control.” You’re still going to find people who say Jennings didn’t have control since Fate’s arm was in there and he couldn’t pull the ball into his chest. Nevertheless I’ve always said it was a Jennings catch. The possession thing was merely the best defense of the call I’ve heard.
It’s always the case some folks will look at the wrong body part. It’s part of the over legislated league. They’re so used to paying attention to feet for determining if a catch was inbounds they think it matter all the time. It’s the nice part about having been an RPGer with guys in my gaming group that were hardcore rules lawyers, I learned rule scope, usually while finding out the NPCs I made were completely useless against the rules lawyers.