AA 1623 then AA 3740 at DFW
Washington National → Dallas-Fort Worth → Acapulco
Timetable, Dallas-Fort Worth time
14:34AA 1623 from Washington National at the gate
11:23AA 3740 to Acapulco leaves the gate
20 h 49 apart on the timetable, overnight
AA 3740 leaves 20 h 49 after AA 1623 arrives on the timetable: more than half a day, so not a connection we count.