UA 806 then VA 8118 at San Francisco
Seoul → San Francisco → Las Vegas
Timetable, San Francisco time
06:30UA 806 from Seoul at the gatealso OZ 6620
22:35VA 8118 to Las Vegas leaves the gate
16 h 05 apart on the timetable
VA 8118 leaves 16 h 05 after UA 806 arrives on the timetable: more than half a day, so not a connection we count.