Y4 816 then AA 1408 at DFW
Queretaro → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
16:25Y4 816 from Queretaro at the gate
10:49AA 1408 to Huatulco leaves the gate
18 h 24 apart on the timetable, overnight
AA 1408 leaves 18 h 24 after Y4 816 arrives on the timetable: more than half a day, so not a connection we count.