UA 1711 then UA 3263 at Houston
Las Vegas → Houston → Richmond
Timetable, Houston time
15:15UA 1711 from Las Vegas at the gate
07:00UA 3263 to Richmond leaves the gate
15 h 45 apart on the timetable, overnight
UA 3263 leaves 15 h 45 after UA 1711 arrives on the timetable: more than half a day, so not a connection we count.