6E 5104 then S5 650 at Mumbai
Chennai → Mumbai → Jaisalmer
Timetable, Mumbai time
19:206E 5104 from Chennai at the gate
16:35S5 650 to Jaisalmer leaves the gate
21 h 15 apart on the timetable, overnight
S5 650 leaves 21 h 15 after 6E 5104 arrives on the timetable: more than half a day, so not a connection we count.