I'm going to Turkey from LAX to JKF to Istanbul. I'm on American Airlines from LAX to JFK but switch to Turkish Airlines to go to IST. The trip is booked as one itinerary on Expedia. AA allows 1 free checked baggage to Europe but it is not clear if that applies if one changes airlines or if the change occurs while still in the U.S.
Does anyone have any experience with this or similar? I have a inquiry sent to Expedia but thought I'd check with other travelers too while I was waiting for their response.