AV 2046 then SQ 1550 at San Francisco
Arcata → San Francisco → Boston
Timetable, San Francisco time
20:00AV 2046 from Arcata at the gate
10:44SQ 1550 to Boston leaves the gate
14 h 44 apart on the timetable, overnight
SQ 1550 leaves 14 h 44 after AV 2046 arrives on the timetable: more than half a day, so not a connection we count.