UA 1597 then VA 8562 at San Francisco
Columbus (Ohio) → San Francisco → Las Vegas
Timetable, San Francisco time
09:28UA 1597 from Columbus (Ohio) at the gate
08:40VA 8562 to Las Vegas leaves the gate
23 h 12 apart on the timetable, overnight
VA 8562 leaves 23 h 12 after UA 1597 arrives on the timetable: more than half a day, so not a connection we count.