AA 3444 then AA 1408 at DFW
Harlingen → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
16:31AA 3444 from Harlingen at the gate
10:23AA 1408 to Huatulco leaves the gate
17 h 52 apart on the timetable, overnight
AA 1408 leaves 17 h 52 after AA 3444 arrives on the timetable: more than half a day, so not a connection we count.