UA 1249 then UA 3754 at Houston
Tocumen → Houston → Waco
Timetable, Houston time
12:15UA 1249 from Tocumen at the gate
11:30UA 3754 to Waco leaves the gate
23 h 15 apart on the timetable, overnight
UA 3754 leaves 23 h 15 after UA 1249 arrives on the timetable: more than half a day, so not a connection we count.