Both advertise that with the card, on Star Alliance flights, you can check your first bag free. Does anyone know whether you can check two bags free (per cardholder) if you have both cards?
1) The T&Cs I have (at least the post 7/19/11 T&Cs, and the current advertisements I see) state this applies to CO/UA operated flights only, not *A flights. If I'm missing something here or you're seeing something advertised differently, please correct me.
2) Also on their T&Cs, (again, assuming post-7/19...but this will apply to everyone 1/1/12) this is limited to the primary cardholder and one companion listed on their reservation and the reservation must be paid for using that card. IMHO that would mean you get 1 free bag per person for up to two people, period.
This is strictly going by their T&Cs. I don't know how an actual agent would handle it if you presented two cards, and it wouldn't hurt to ask, but I would assume we would have heard something differently in the forums by now if what I said wasn't true.