Wondering if there are any FTers who have experience with this. Is it possible to credit different flight segments of an AA-issued itinerary to different frequent flyer programs? Specifically, I am looking to fly DFW-LHR-BCN, and want DFW-LHR (AA operated) to credit to AA while LHR-BCN (BA operated of course) credits to BA.

Is it possible to either set it up such that each segment is somehow tied to a different FFP beforehand? Alternatively, is it possible to switch FFPs mid-itinerary (say, while I am in LHR)?

I am trying to hit BA Silver this year in addition to AA EXP, and am trying to balance EQP needs with TP needs.