UA 3910 then UA 2144 at Houston
Washington → Houston → Jacksonville
Timetable, Houston time
14:30UA 3910 from Washington at the gate
13:19UA 2144 to Jacksonville leaves the gate
22 h 49 apart on the timetable, overnight
UA 2144 leaves 22 h 49 after UA 3910 arrives on the timetable: more than half a day, so not a connection we count.