UA 3985 then UA 4307 at Houston
Des Moines → Houston → Northwest Arkansas
Timetable, Houston time
10:40UA 3985 from Des Moines at the gate
09:35UA 4307 to Northwest Arkansas leaves the gate
22 h 55 apart on the timetable, overnight
UA 4307 leaves 22 h 55 after UA 3985 arrives on the timetable: more than half a day, so not a connection we count.