UA 6303 then DL 2709 at Houston
El Paso → Houston → Atlanta
Timetable, Houston time
08:32UA 6303 from El Paso at the gate
08:05DL 2709 to Atlanta leaves the gate
23 h 33 apart on the timetable, overnight
DL 2709 leaves 23 h 33 after UA 6303 arrives on the timetable: more than half a day, so not a connection we count.