AV 2046 then DL 977 at San Francisco
Arcata → San Francisco → Boston
Timetable, San Francisco time
20:00AV 2046 from Arcata at the gate
12:30DL 977 to Boston leaves the gatealso KE 6731
16 h 30 apart on the timetable, overnight
DL 977 leaves 16 h 30 after AV 2046 arrives on the timetable: more than half a day, so not a connection we count.