DL 921 then AA 3740 at DFW
Atlanta → Dallas-Fort Worth → Acapulco
Timetable, Dallas-Fort Worth time
15:20DL 921 from Atlanta at the gate
11:23AA 3740 to Acapulco leaves the gate
20 h 03 apart on the timetable, overnight
AA 3740 leaves 20 h 03 after DL 921 arrives on the timetable: more than half a day, so not a connection we count.