Things can be credited on a per-leg basis.
I would suggest crediting the AS leg to AA, and the VX leg to AS (which I have to assume is possible). Of course, if you open a VX account and credit there, it'll all end up in the same place at some point.
We're going SJC-KOA-SJC in F over Thanksgiving. Outbound wasn't bad, but return is hella pricy. AS operated, crediting to AA.
Cheers.
Thank you. If I book this flight, that is what I will do. There is one more option that I am seeing. There are, relatively speaking, a few decent fares in J for LAX-HNL-ORD on DL. I can get ORD-LAX one way without paying up too much. As soon as I change HNL to OGG however, where I actually want to be, the price jumps by about 4 times the value of the HNL-OGG-HNL ticket. I'm not sure if that is because I'm searching Google Flights for "Business", and these cheap inter-island flights are somehow excluded. Would Delta be able to add HNL-OGG-HNL to my itinerary in economy? I could buy HNL-OGG-HNL myself for not much money, but if there is some problem, and the HNL-OGG leg is delayed on the return, I would like have some protection for the 4 business tickets I'm buying.