Originally Posted by
boneofthet
Yes, those are AA codeshare flights. Thank you so much for the info, it's really helpful!!
There are also a couple of other quirks like not being able to buy WiFi in advance and not being able to select meals in advance in my experience. The exception is if you have an AA Codeshare where you still have a QR flight number on part of your ticket, for that flight you can select meals and buy WiFi.