UA 3871 then UA 4307 at Houston
IAB → Houston → Northwest Arkansas
Timetable, Houston time
10:55UA 3871 from IAB at the gate
09:35UA 4307 to Northwest Arkansas leaves the gate
22 h 40 apart on the timetable, overnight
UA 4307 leaves 22 h 40 after UA 3871 arrives on the timetable: more than half a day, so not a connection we count.