As a follow on to my previous post yesterday, I have been looking for AA codeshares in Asia. I can find some e.g. AA 8486 from BKK to HND operated by JAL. Can these codeshares be used if they are not immediately followed/preceded by a trans-pacific flight. I'm not sure if they are available independantly or if the agreement between AA and JAL is to allow more destinations to/from US and hence carry additional constraints on usage.
So far I've found AA codeshares with JAL/Cathay for BKK, SIN, CGK, ICN, SGN and DPS but nothing in Australia or NZ