Looks like AA check-in/gate agents are still up to their old tricks:
https://forum.elliott.org/threads/ho...oarding.11601/
LAX-PVG-HKG-SFO denied boarding by AA because PVG-HKG was on a separate ticket by CX.
AA reached out and has admitted pax should have been allowed to board and is working to reimburse expenses... but too late to save the holiday