WN 1640 then VA 8085 at San Francisco
Las Vegas → San Francisco → Houston
Timetable, San Francisco time
23:20WN 1640 from Las Vegas at the gate
16:40VA 8085 to Houston leaves the gate
17 h 20 apart on the timetable, overnight
VA 8085 leaves 17 h 20 after WN 1640 arrives on the timetable: more than half a day, so not a connection we count.