Deckter

Hello dear experts,

I made a booking on mixed metal, BA+AA (TXL-CUN) return through an OTA. I know i should have done it through AA website, but the price difference was quite big, and also, i did not find any information about AA having a BPG, so i assumed they don't.

The booking class for that flight is Q. Is there any chance of upgrading for cash to PE on the return transatlantic flight without doing it through the OTA, which are likely to charge me for it? Would i be offered an upgrade option during online check-in?

Thanks for your help.