UA 2204 then UA 3754 at Houston
Newark → Houston → Waco
Timetable, Houston time
15:11UA 2204 from Newark at the gate
11:30UA 3754 to Waco leaves the gate
20 h 19 apart on the timetable, overnight
UA 3754 leaves 20 h 19 after UA 2204 arrives on the timetable: more than half a day, so not a connection we count.