Hi travelers, we're planning to fly JFK-DOH -SGN, and the first leg is on an AA ticket and AA metal. Then, we'll transfer to QR on a different ticket, for the onward leg to SGN, with some 3 hours connection time. Question is, will we have to exit the transit area after deplaning from AA? We aren't going to check bags, so I'm thinking not, but I've never transited in DOH, so looking for some knowledge on this, thanks.