UA 3920 then UA 697 at Houston
Orlando → Houston → San Antonio
Timetable, Houston time
19:47UA 3920 from Orlando at the gate
14:30UA 697 to San Antonio leaves the gate
18 h 43 apart on the timetable, overnight
UA 697 leaves 18 h 43 after UA 3920 arrives on the timetable: more than half a day, so not a connection we count.