AA 3818 then UA 1780 at DFW
El Paso → Dallas-Fort Worth → San Francisco
Timetable, Dallas-Fort Worth time
15:45AA 3818 from El Paso at the gate
15:16UA 1780 to San Francisco leaves the gate
23 h 31 apart on the timetable, overnight
UA 1780 leaves 23 h 31 after AA 3818 arrives on the timetable: more than half a day, so not a connection we count.