6E 5214 then SG 622 at Mumbai
Chennai → Mumbai → Varanasi
Timetable, Mumbai time
13:406E 5214 from Chennai at the gate
10:40SG 622 to Varanasi leaves the gate
21 h apart on the timetable, overnight
SG 622 leaves 21 h after 6E 5214 arrives on the timetable: more than half a day, so not a connection we count.