UA 535 then UA 3754 at Houston
Chicago → Houston → College Station
Timetable, Houston time
12:24UA 535 from Chicago at the gate
10:00UA 3754 to College Station leaves the gate
21 h 36 apart on the timetable, overnight
UA 3754 leaves 21 h 36 after UA 535 arrives on the timetable: more than half a day, so not a connection we count.