6E 5288 then SG 622 at Mumbai
Kolkata → Mumbai → Varanasi
Timetable, Mumbai time
14:306E 5288 from Kolkata at the gate
10:40SG 622 to Varanasi leaves the gate
20 h 10 apart on the timetable, overnight
SG 622 leaves 20 h 10 after 6E 5288 arrives on the timetable: more than half a day, so not a connection we count.