UA 3920 then AA 5530 at Houston
Orlando → Houston → Dallas-Fort Worth
Timetable, Houston time
19:47UA 3920 from Orlando at the gate
16:14AA 5530 to Dallas-Fort Worth leaves the gate
20 h 27 apart on the timetable, overnight
AA 5530 leaves 20 h 27 after UA 3920 arrives on the timetable: more than half a day, so not a connection we count.