AV 2267 then SQ 1550 at San Francisco
Medford → San Francisco → Boston
Timetable, San Francisco time
21:20AV 2267 from Medford at the gate
10:50SQ 1550 to Boston leaves the gate
13 h 30 apart on the timetable, overnight
SQ 1550 leaves 13 h 30 after AV 2267 arrives on the timetable: more than half a day, so not a connection we count.