AA 3818 then AA 1724 at DFW
El Paso → Dallas-Fort Worth → Buffalo
Timetable, Dallas-Fort Worth time
15:45AA 3818 from El Paso at the gate
11:58AA 1724 to Buffalo leaves the gate
20 h 13 apart on the timetable, overnight
AA 1724 leaves 20 h 13 after AA 3818 arrives on the timetable: more than half a day, so not a connection we count.