AI 2518 then SG 674 at Mumbai
Kolkata → Mumbai → Patna
Timetable, Mumbai time
11:20AI 2518 from Kolkata at the gate
16:00SG 674 to Patna leaves the gate
4 h 40 apart on the timetable
Mumbai’s board may post take-off times rather than gate times. If so, connections here had up to 30 min less than shown.
The last days
AI 2518 and SG 674 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.