UA 2367 then UA 3754 at Houston
San Francisco → Houston → Waco
Timetable, Houston time
14:50UA 2367 from San Francisco at the gate
11:30UA 3754 to Waco leaves the gate
20 h 40 apart on the timetable, overnight
UA 3754 leaves 20 h 40 after UA 2367 arrives on the timetable: more than half a day, so not a connection we count.