AV 2046 then EK 6388 at San Francisco
Arcata → San Francisco → Tucson
Timetable, San Francisco time
20:00AV 2046 from Arcata at the gate
18:47EK 6388 to Tucson leaves the gate
22 h 47 apart on the timetable, overnight
EK 6388 leaves 22 h 47 after AV 2046 arrives on the timetable: more than half a day, so not a connection we count.