UA 2026 then UA 3754 at Houston
Monterrey → Houston → Waco
Timetable, Houston time
14:36UA 2026 from Monterrey at the gate
11:30UA 3754 to Waco leaves the gate
20 h 54 apart on the timetable, overnight
UA 3754 leaves 20 h 54 after UA 2026 arrives on the timetable: more than half a day, so not a connection we count.