AV 2046 then Y4 2443 at San Francisco
Arcata → San Francisco → Las Vegas
Timetable, San Francisco time
20:00AV 2046 from Arcata at the gate
14:21Y4 2443 to Las Vegas leaves the gatealso F9 2486
18 h 21 apart on the timetable, overnight
Y4 2443 leaves 18 h 21 after AV 2046 arrives on the timetable: more than half a day, so not a connection we count.