AI 2594 then SG 622 at Mumbai
Udaipur → Mumbai → Varanasi
Timetable, Mumbai time
16:35AI 2594 from Udaipur at the gate
10:40SG 622 to Varanasi leaves the gate
18 h 05 apart on the timetable, overnight
SG 622 leaves 18 h 05 after AI 2594 arrives on the timetable: more than half a day, so not a connection we count.