AA 186 then AA 1408 at DFW
Cancún → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
18:38AA 186 from Cancún at the gate
10:23AA 1408 to Huatulco leaves the gate
15 h 45 apart on the timetable, overnight
AA 1408 leaves 15 h 45 after AA 186 arrives on the timetable: more than half a day, so not a connection we count.