UA 733 then TP 4392 at San Francisco
Arcata → San Francisco → Boston
Timetable, San Francisco time
07:18UA 733 from Arcata at the gate
22:10TP 4392 to Boston leaves the gate
14 h 52 apart on the timetable
TP 4392 leaves 14 h 52 after UA 733 arrives on the timetable: more than half a day, so not a connection we count.