UA 3920 then AA 3911 at Houston
Orlando → Houston → Dallas-Fort Worth
Timetable, Houston time
19:47UA 3920 from Orlando at the gate
14:01AA 3911 to Dallas-Fort Worth leaves the gate
18 h 14 apart on the timetable, overnight
AA 3911 leaves 18 h 14 after UA 3920 arrives on the timetable: more than half a day, so not a connection we count.