AA 2136 then AA 1408 at DFW
Morelia → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
15:46AA 2136 from Morelia at the gate
10:23AA 1408 to Huatulco leaves the gate
18 h 37 apart on the timetable, overnight
AA 1408 leaves 18 h 37 after AA 2136 arrives on the timetable: more than half a day, so not a connection we count.