Originally Posted by
chil
One more question related to this: can BA or IB agents merge two separately purchased tickets into one PNR? This will solve all our problems. My govt travel agent can do it at the time of the booking -- I used to have AA + LA or even DL + LA on the same PNR (the latter combination usually yielded weird consequences), but I'm not sure how easy it is to do after two tickets had already been purchased -- I'm pretty sure it is but the question is whether or not they will be willing to do it.
I would be somewhat surprised if a travel agent can merge two reservations, one of which is a redemption. Redemption tickets are constructed differently to revenue tickets and trying to merge them just can't happen within one airline, let alone over 3 of them and 2 ticketing sources. It is the case that TAs can construct tickets with complex itineraries and multiple airlines, that's what they are best at doing. You can buy via BA a through single reservation ticket from SCL to DME via London on the direct service avoiding EZE, or via EZE and then LHR, but that will presumably cost more than the redemption. But that's the heart of it: you're looking for a service on interlining that comes at a cost. If you don't want to pay that cost then you don't get the interlining. The other option is to work out a way of travelling with hand baggage only.