AA 3818 then AA 3406 at DFW
El Paso → Dallas-Fort Worth → Monterrey
Timetable, Dallas-Fort Worth time
15:45AA 3818 from El Paso at the gate
08:20AA 3406 to Monterrey leaves the gate
16 h 35 apart on the timetable, overnight
AA 3406 leaves 16 h 35 after AA 3818 arrives on the timetable: more than half a day, so not a connection we count.