6E 5128 then AI 2276 at Mumbai
Kolkata → Mumbai → Colombo
Timetable, Mumbai time
22:006E 5128 from Kolkata at the gate
12:40AI 2276 to Colombo leaves the gate
14 h 40 apart on the timetable, overnight
AI 2276 leaves 14 h 40 after 6E 5128 arrives on the timetable: more than half a day, so not a connection we count.