Originally Posted by
potfish
I don't know how I can try the codeshares, unless you mean calling AA and asking them to try them? The agent said when I was booking that they only book the "prime" flight numbers (their word).
I've had problems before getting the AA RTW desk to book codeshares (except of course for AA codes). Still, it'd be worth trying again, with a different agent. Especially because in your case, one of the codeshares is an AA code. Call and ask the agent to change
NRT-BOS to flight AA 8476, and BOS-MAD to flight AY 5648. Don't mention codeshares or prime.
(Prime is the term for a flight that's operated and marketed by the same airline, that is, not a codeshare.)