UA 3920 then UA 2144 at Houston
Orlando → Houston → Jacksonville
Timetable, Houston time
19:47UA 3920 from Orlando at the gate
13:19UA 2144 to Jacksonville leaves the gate
17 h 32 apart on the timetable, overnight
UA 2144 leaves 17 h 32 after UA 3920 arrives on the timetable: more than half a day, so not a connection we count.