AV 2267 then AI 184 at San Francisco
Medford → San Francisco → Kolkata
Timetable, San Francisco time
21:20AV 2267 from Medford at the gate
18:35AI 184 to Kolkata leaves the gate
21 h 15 apart on the timetable, overnight
AI 184 leaves 21 h 15 after AV 2267 arrives on the timetable: more than half a day, so not a connection we count.