CM 2458 then AI 184 at San Francisco
Sacramento → San Francisco → Kolkata
Timetable, San Francisco time
20:00CM 2458 from Sacramento at the gate
18:35AI 184 to Kolkata leaves the gate
22 h 35 apart on the timetable, overnight
AI 184 leaves 22 h 35 after CM 2458 arrives on the timetable: more than half a day, so not a connection we count.