Uncatchable

[JasonTX]

We have the definition in NCAA, but not sure if this helps. It really comes down to your own personal judgement. If there is question, then the rule says it is catchable. If I see a play and my judgement tells me there is no way he could have caught a pass, then it's uncatchable. What I judge to be that, may not be the same as what you judge. I know you already knew all that so I'm just thinking out loud.

A catchable forward pass is an untouched legal forward
pass beyond the neutral zone to an eligible player who has a reasonable
opportunity to catch the ball. When in question, a legal forward pass is
catchable.