AI 472 then SG 622 at Mumbai
Chandigarh → Mumbai → Varanasi
Timetable, Mumbai time
11:35AI 472 from Chandigarh at the gate
10:40SG 622 to Varanasi leaves the gate
23 h 05 apart on the timetable, overnight
SG 622 leaves 23 h 05 after AI 472 arrives on the timetable: more than half a day, so not a connection we count.