UA 4535 then UA 3754 at Houston
Huntsville → Houston → College Station
Timetable, Houston time
13:17UA 4535 from Huntsville at the gate
10:00UA 3754 to College Station leaves the gate
20 h 43 apart on the timetable, overnight
UA 3754 leaves 20 h 43 after UA 4535 arrives on the timetable: more than half a day, so not a connection we count.