UA 2 then VA 8118 at San Francisco
Singapore → San Francisco → Las Vegas
Timetable, San Francisco time
09:15UA 2 from Singapore at the gate
22:35VA 8118 to Las Vegas leaves the gate
13 h 20 apart on the timetable
VA 8118 leaves 13 h 20 after UA 2 arrives on the timetable: more than half a day, so not a connection we count.