Originally Posted by
Mwenenzi
Why 2 ffp's?
What status/ff miles-avios do you hope to get? Better to get OW Sapphire with one ffp. AY OWS gives you lounge access. AA OWS has limited lounge access. Avios ff currency is used by QR, BA, AY, IB & IE
Changing frequent flyer numbers is a reservation can be problematic. Does not always work. At times a boarding pass can the 1 ffn printed, but still credit to the other.
aa earns terribly where ay earns well and vice versa. It's stark. And hitting owe on ay plus ows on aa is quite doable with a single xONEx (maybe with a little boost in year one given aa is much easier to requalify on than earn first time).
Agreed it takes some savvy and effort to ensure things credit where you want. It helps that you'll likely fly batches of segments with a given airline and thus crediting to the same place if earning is the driver.