UA 2471 then AA 3740 at DFW
Washington → Dallas-Fort Worth → Acapulco
Timetable, Dallas-Fort Worth time
11:19UA 2471 from Washington at the gate
09:45AA 3740 to Acapulco leaves the gate
22 h 26 apart on the timetable, overnight
AA 3740 leaves 22 h 26 after UA 2471 arrives on the timetable: more than half a day, so not a connection we count.