UA 4111 then UA 4573 at Houston
Minot → Houston → Huntsville
Timetable, Houston time
21:15UA 4111 from Minot at the gate
18:10UA 4573 to Huntsville leaves the gate
20 h 55 apart on the timetable, overnight
UA 4573 leaves 20 h 55 after UA 4111 arrives on the timetable: more than half a day, so not a connection we count.