AA 3378 then AA 1408 at DFW
Fargo → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
20:30AA 3378 from Fargo at the gate
10:49AA 1408 to Huatulco leaves the gate
14 h 19 apart on the timetable, overnight
AA 1408 leaves 14 h 19 after AA 3378 arrives on the timetable: more than half a day, so not a connection we count.