AA 2138 then AA 1408 at DFW
Boston → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
16:17AA 2138 from Boston at the gate
10:23AA 1408 to Huatulco leaves the gate
18 h 06 apart on the timetable, overnight
AA 1408 leaves 18 h 06 after AA 2138 arrives on the timetable: more than half a day, so not a connection we count.