AA 3818 then AA 1547 at DFW
El Paso → Dallas-Fort Worth → Cancún
Timetable, Dallas-Fort Worth time
15:45AA 3818 from El Paso at the gate
11:19AA 1547 to Cancún leaves the gate
19 h 34 apart on the timetable, overnight
AA 1547 leaves 19 h 34 after AA 3818 arrives on the timetable: more than half a day, so not a connection we count.