KE 23 then VA 8562 at San Francisco
Seoul → San Francisco → Las Vegas
Timetable, San Francisco time
09:35KE 23 from Seoul at the gatealso DL 7860
08:35VA 8562 to Las Vegas leaves the gate
23 h apart on the timetable, overnight
VA 8562 leaves 23 h after KE 23 arrives on the timetable: more than half a day, so not a connection we count.