AA 1624 then AA 1408 at DFW
Washington National → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
17:50AA 1624 from Washington National at the gate
10:23AA 1408 to Huatulco leaves the gate
16 h 33 apart on the timetable, overnight
AA 1408 leaves 16 h 33 after AA 1624 arrives on the timetable: more than half a day, so not a connection we count.