for example, can i credit a OW flight to my AS account, but access using an AA number? maybe by showing the apple wallet card or something.

similarly, can i use business/first check in?

i can see how seat assignments would be complicated and is not a concern.

ty!

If you are trying to access an AS lounge, the boarding pass must reflect the credential you are entering on.
That is explicitly stated by Alaska airlines.

My experience is you get the benefits of the FF program you are flying under. I don�t like it as it�s an �alliance� and if I am OWE that should cover everyone. It�s become an alliance where you can earn and spend miles but not use benefits.

pls jump to the last paragraph Conclusion

I have flown Royal Jordanian quite a few times, most recently in July, in business class from Athens to Bangkok via Amman. The airline provides old-style service.

The match from the hotel program can make sense if you don�t have status with Oneworld but have flights with them coming up in economy, as Sapphire (RJ Gold) grants you what essentially are business class level ground services such as business class check-in, extra luggage allowance, lounge access, and priority boarding.

The Sapphire status also provides access to Alaska Airlines and American Airlines lounges when flying with these airlines domestically in the US (cheaper than buying the annual lounge access).

However, I would probably use another program to credit the flights. You can use one program for benefits and another for crediting purposes.

There are a number of airlines that treat their ownmembers differently from the way that they treat those who are omembers of other alliance partners. For example, AA allows admittance into Admirals Clubs to elite status members of other programs, but not to AAdvantage elite members. It's not uncommon.

Well, the marketing of these airline alliances is that you can use any member of the alliance as if you are a member of each airline's ffp. Otherwise, one would book a trip on another non-alliance airline.

It has been changing. Used to be I could book using Avios and put in my AA ff# and receive my OWE AA benefits but now many OW airlines won�t let you change numbers. Yesterday I booked a QR flight using AA miles and QR inserted my privilege club # in the res after I logged in to select seats.

it has not been like this when alliances were created. A few exceptions were the case but collectively they are making being a OWE/S less valuable if you don�t book and fly exclusively where you have status.