UA 1860 then UA 3754 at Houston
Veracruz → Houston → Waco
Timetable, Houston time
16:00UA 1860 from Veracruz at the gate
11:30UA 3754 to Waco leaves the gate
19 h 30 apart on the timetable, overnight
UA 3754 leaves 19 h 30 after UA 1860 arrives on the timetable: more than half a day, so not a connection we count.