Where would I find the details on rules for traveing on an award ticket that has a leg missed due to mechanical issues and interlining. I was on a award flight and missed a connection due to plane issues. The gate agent booked me on an AA flight. Got to the gate and United hadnt “paid” for the ticket. AA did some calling and they said since I was on an award ticket UAL wouldn’t Interline me. I found the code
of carriage dealing with code share but this isn’t a code share agreement. All my google searches deal with interlining luggage and which airlines Interline.