6E 604 then 6E 5354 at Mumbai
Srinagar → Mumbai → Kolkata
Timetable, Mumbai time
17:356E 604 from Srinagar at the gate
15:156E 5354 to Kolkata leaves the gate
21 h 40 apart on the timetable, overnight
6E 5354 leaves 21 h 40 after 6E 604 arrives on the timetable: more than half a day, so not a connection we count.