Originally Posted by rob_88

I've got a QF plated DONE with an AA segment. From AA's MMB flow I can get a full fare and taxes breakdown, so I assume data sharing happens between all OW carriers on these regardless of ticketing carrier. Given how tightly coupled AA and BA's revenue based points systems are, I suspect BA will get segment based fare costs pretty easily. That said, I'll be crediting this to BA when I fly in a couple months, so will report back.