UA 4111 then UA 3986 at Houston
Minot → Houston → Des Moines
Timetable, Houston time
21:15UA 4111 from Minot at the gate
20:05UA 3986 to Des Moines leaves the gate
22 h 50 apart on the timetable, overnight
UA 3986 leaves 22 h 50 after UA 4111 arrives on the timetable: more than half a day, so not a connection we count.