UA 584 then UA 4307 at Houston
Philadelphia → Houston → Northwest Arkansas
Timetable, Houston time
10:48UA 584 from Philadelphia at the gate
09:35UA 4307 to Northwest Arkansas leaves the gate
22 h 47 apart on the timetable, overnight
UA 4307 leaves 22 h 47 after UA 584 arrives on the timetable: more than half a day, so not a connection we count.