Originally Posted by
Often1
Under US law, the second sector is the same as the first. To be clear: the baggage allowance for the marketing carrier of the first segment is the baggage allowance for all segments of that ticket (note: ticket, not PNR). Thus, LAX-PVG (whether HKG is a connection or stopover) is the same baggage allowance.
PVG-CAN is a separate ticket four days later. The allowance for that ticket is whatever the published allowance is for that separate ticket.
I believe OP has LAX-HKG-PVG-HKG in one ticket and HKG-CAN on another. PVG-HKG should still be 2pc, but if it were an Asia Miles redeemed ticket, AM sometimes mess things up (AM's mistake). Revenue tickets issued from autoprice record should correctly reflect 2pc on PVG-HKG. HKG-CAN, if were issued as a standalone ticket, would follow the weight concept.