UA 5133 then UA 3754 at Houston
Hattiesburg → Houston → Waco
Timetable, Houston time
12:35UA 5133 from Hattiesburg at the gate
11:30UA 3754 to Waco leaves the gate
22 h 55 apart on the timetable, overnight
UA 3754 leaves 22 h 55 after UA 5133 arrives on the timetable: more than half a day, so not a connection we count.