UA 255 then UA 3234 at Houston
Newark → Houston → El Paso
Timetable, Houston time
10:38UA 255 from Newark at the gate
06:45UA 3234 to El Paso leaves the gate
20 h 07 apart on the timetable, overnight
UA 3234 leaves 20 h 07 after UA 255 arrives on the timetable: more than half a day, so not a connection we count.