6E 6206 then 6E 6704 at Mumbai
Kolkata → Mumbai → New Delhi
Timetable, Mumbai time
19:156E 6206 from Kolkata at the gate
13:456E 6704 to New Delhi leaves the gate
18 h 30 apart on the timetable, overnight
6E 6704 leaves 18 h 30 after 6E 6206 arrives on the timetable: more than half a day, so not a connection we count.