AA 355 then AA 1408 at DFW
Grand Cayman → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
19:00AA 355 from Grand Cayman at the gate
10:23AA 1408 to Huatulco leaves the gate
15 h 23 apart on the timetable, overnight
AA 1408 leaves 15 h 23 after AA 355 arrives on the timetable: more than half a day, so not a connection we count.