UA 3910 then UA 4533 at Houston
Washington → Houston → Pensacola
Timetable, Houston time
14:30UA 3910 from Washington at the gate
14:20UA 4533 to Pensacola leaves the gate
23 h 50 apart on the timetable, overnight
UA 4533 leaves 23 h 50 after UA 3910 arrives on the timetable: more than half a day, so not a connection we count.