Originally Posted by JackR

I think you have enough time to do the immigration clearance, pick-up luggage, go through customs, bus transfer T1 to T2 and check-in for JAL domestic (up to minus 15 minutes before departure time). Upon leaving T1 you will kn ow if you wll make it or not in time to T2. If this is the case find an AA rep or their representattives (JAL) in T1 before going over to T2 and state your case. If it is a paid ticket you should be coverred for either a transfer to HND for your flight to OSA or a train ticket or a night in a hotel or a combination of these.