UA 3920 then UA 787 at Houston
Orlando → Houston → Chicago
Timetable, Houston time
19:47UA 3920 from Orlando at the gate
13:40UA 787 to Chicago leaves the gate
17 h 53 apart on the timetable, overnight
UA 787 leaves 17 h 53 after UA 3920 arrives on the timetable: more than half a day, so not a connection we count.