QP 1146 then SG 622 at Mumbai
Port Blair → Mumbai → Varanasi
Timetable, Mumbai time
16:00QP 1146 from Port Blair at the gate
10:40SG 622 to Varanasi leaves the gate
18 h 40 apart on the timetable, overnight
SG 622 leaves 18 h 40 after QP 1146 arrives on the timetable: more than half a day, so not a connection we count.