AF 2251 then VA 8562 at San Francisco
Seattle → San Francisco → Las Vegas
Timetable, San Francisco time
20:18AF 2251 from Seattle at the gatealso WS 8631
14:20VA 8562 to Las Vegas leaves the gate
18 h 02 apart on the timetable, overnight
VA 8562 leaves 18 h 02 after AF 2251 arrives on the timetable: more than half a day, so not a connection we count.