UA 3280 then UA 4069 at Houston
Greensboro → Houston → Birmingham (Alabama)
Timetable, Houston time
20:30UA 3280 from Greensboro at the gate
18:20UA 4069 to Birmingham (Alabama) leaves the gate
21 h 50 apart on the timetable, overnight
UA 4069 leaves 21 h 50 after UA 3280 arrives on the timetable: more than half a day, so not a connection we count.