UA 3920 then UA 348 at Houston
Orlando → Houston → Miami
Timetable, Houston time
19:47UA 3920 from Orlando at the gate
14:45UA 348 to Miami leaves the gate
18 h 58 apart on the timetable, overnight
UA 348 leaves 18 h 58 after UA 3920 arrives on the timetable: more than half a day, so not a connection we count.