AV 2046 then UA 2603 at San Francisco
Arcata → San Francisco → Salt Lake City
Timetable, San Francisco time
20:00AV 2046 from Arcata at the gate
12:28UA 2603 to Salt Lake City leaves the gate
16 h 28 apart on the timetable, overnight
UA 2603 leaves 16 h 28 after AV 2046 arrives on the timetable: more than half a day, so not a connection we count.