AV 2046 then UA 2356 at San Francisco
Arcata → San Francisco → Boston
Timetable, San Francisco time
20:00AV 2046 from Arcata at the gate
10:46UA 2356 to Boston leaves the gatealso VA 8309, NZ 9015
14 h 46 apart on the timetable, overnight
UA 2356 leaves 14 h 46 after AV 2046 arrives on the timetable: more than half a day, so not a connection we count.