UA 315 then UA 4307 at Houston
Tucson → Houston → Northwest Arkansas
Timetable, Houston time
10:53UA 315 from Tucson at the gate
09:35UA 4307 to Northwest Arkansas leaves the gate
22 h 42 apart on the timetable, overnight
UA 4307 leaves 22 h 42 after UA 315 arrives on the timetable: more than half a day, so not a connection we count.