AA 1254 then AA 3740 at DFW
Nashville → Dallas-Fort Worth → Acapulco
Timetable, Dallas-Fort Worth time
12:34AA 1254 from Nashville at the gate
09:45AA 3740 to Acapulco leaves the gate
21 h 11 apart on the timetable, overnight
AA 3740 leaves 21 h 11 after AA 1254 arrives on the timetable: more than half a day, so not a connection we count.