UA 4111 then UA 470 at Houston
Minot → Houston → Denver
Timetable, Houston time
21:15UA 4111 from Minot at the gate
16:26UA 470 to Denver leaves the gate
19 h 11 apart on the timetable, overnight
UA 470 leaves 19 h 11 after UA 4111 arrives on the timetable: more than half a day, so not a connection we count.