Originally Posted by GetSetJetSet

Thanks to the mileage run forum, I booked a reasonable J roundtrip YYZ-ORD-PEK-DFW-YYZ and built a 2+ week Asia itinerary out of it. However, I am not based in YYZ, so I booked a NYC-YYZ flight early the morning the itinerary begins with a YYZ-NYC return several hours after my DFW-YYZ is set to arrive. My question is, can I call AA and have them merge these two itineraries so that I am protected in case there are some sort of delays on the AM the trip kicks off or on the DFW-YYZ leg? I'm not certain, but I think US carriers can't sell a ticket between two U.S. cities that go via Canada, would my DFW-YYZ ending to ticket #1 before the YYZ-NYC portion of ticket #2 run afoul of this and prevent them from merging the PNRs? Thanks!