AV 2046 then UA 543 at San Francisco
Arcata → San Francisco → Las Vegas
Timetable, San Francisco time
20:00AV 2046 from Arcata at the gate
14:20UA 543 to Las Vegas leaves the gatealso AC 3886, NZ 9222
18 h 20 apart on the timetable, overnight
UA 543 leaves 18 h 20 after AV 2046 arrives on the timetable: more than half a day, so not a connection we count.