SG 621 then SG 2457 at Mumbai
Udaipur → Mumbai → Kandla
Timetable, Mumbai time
20:45SG 621 from Udaipur at the gate
13:50SG 2457 to Kandla leaves the gate
17 h 05 apart on the timetable, overnight
SG 2457 leaves 17 h 05 after SG 621 arrives on the timetable: more than half a day, so not a connection we count.