Originally Posted by
ernestnywang
If on 1 single TKT, AA rule applies per MSC, so 23kg*2pc. If on separate TKTs, theoretically CX would use weight system, but I doubt they will if you show them connecting AA TKTs.
Actually, the IATA MSC rules were superceded by DOT rules last January and have been enforced since July on all itineraries terminating in the USA. The new rules provide that whatever the allowance is for the first segment is the [U]minimum[U] for the entire itinerary. Thus, presuming that OP is flying TPE-DAY with connections in NRT & ORD, the CX allowance will apply to his journey.