Originally Posted by jsloan

The Minimum Connection Time for an international to domestic, UA flight at ORD is 1h20m, so you booked a flight that was only 20 minutes over the bare minimum and frankly had almost no margin for error. I'd have assumed you did this intentionally, to try to misconnect and collect compensation, because the likelihood of you making this flight wasn't great in the first place unless absolutely everything went according to plan, and/or you were traveling without checked luggage and have Global Entry.

So, having gotten yourself into that situation, why throw UA a lifeline? You've needlessly complicated your UK.261 claim. UA might still pay it, but you've definitely given them an out, particularly if ORD-TYS was delayed and you would have made it.