UA 3280 then UA 4052 at Houston
Greensboro → Houston → Louisville
Timetable, Houston time
20:30UA 3280 from Greensboro at the gate
18:33UA 4052 to Louisville leaves the gate
22 h 03 apart on the timetable, overnight
UA 4052 leaves 22 h 03 after UA 3280 arrives on the timetable: more than half a day, so not a connection we count.