So I'm flying regular economy as a 1K and have a friend flying BE on the same flight as me on different PNRs. I was just going to check in my friend's bag under my baggage allowance, but wondering if the check in or gate agents would allow them to bring it on since effectively UA has to carry it anyway. Airport agents on all airlines, including where I have no status, have usually been cooperative in doing seat assignments on BE tickets even though they are not supposed to, so I wonder if they will accommodate the carry on bag as well, or at worst, gate check it on my PNR for free as 1K.