UA 508 then UA 3917 at Houston
Bogota → Houston → Austin
Timetable, Houston time
12:40UA 508 from Bogota at the gate
07:30UA 3917 to Austin leaves the gate
18 h 50 apart on the timetable, overnight
UA 3917 leaves 18 h 50 after UA 508 arrives on the timetable: more than half a day, so not a connection we count.