AI 2963 then SG 622 at Mumbai
New Delhi → Mumbai → Varanasi
Timetable, Mumbai time
11:15AI 2963 from New Delhi at the gate
10:40SG 622 to Varanasi leaves the gate
23 h 25 apart on the timetable, overnight
SG 622 leaves 23 h 25 after AI 2963 arrives on the timetable: more than half a day, so not a connection we count.