AA 3839 then AA 1408 at DFW
Bismarck → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
16:44AA 3839 from Bismarck at the gate
10:23AA 1408 to Huatulco leaves the gate
17 h 39 apart on the timetable, overnight
AA 1408 leaves 17 h 39 after AA 3839 arrives on the timetable: more than half a day, so not a connection we count.