UA 3878 then UA 4049 at Houston
IAB → Houston → El Paso
Timetable, Houston time
22:40UA 3878 from IAB at the gate
12:14UA 4049 to El Paso leaves the gate
13 h 34 apart on the timetable, overnight
UA 4049 leaves 13 h 34 after UA 3878 arrives on the timetable: more than half a day, so not a connection we count.