AA 3613 then AA 1408 at DFW
Amarillo → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
17:46AA 3613 from Amarillo at the gate
10:23AA 1408 to Huatulco leaves the gate
16 h 37 apart on the timetable, overnight
AA 1408 leaves 16 h 37 after AA 3613 arrives on the timetable: more than half a day, so not a connection we count.