AV 2046 then UA 1372 at San Francisco
Arcata → San Francisco → Boston
Timetable, San Francisco time
20:00AV 2046 from Arcata at the gate
12:45UA 1372 to Boston leaves the gatealso VA 8305, NZ 9010
16 h 45 apart on the timetable, overnight
UA 1372 leaves 16 h 45 after AV 2046 arrives on the timetable: more than half a day, so not a connection we count.