You are allowed two Pieces of checked baggage for your entire trip.

As it's an international itinerary, no AA fee should be payable.

Generally the weight limits of the carrier who you are checking in with apply, so for:

• CX it's 23Kg (Higher limit for travel "from or via" "The Americas"),
• QF it's 32Kg,
• BA it's 23Kg,
• LAN it's 23Kg and
• AA it's 23Kg.