4Z 493 then SA 555 at Johannesburg
Victoria Falls → Johannesburg → Durban
Timetable, Johannesburg time
14:104Z 493 from Victoria Falls at the gate
13:40SA 555 to Durban leaves the gate
23 h 30 apart on the timetable, overnight
SA 555 leaves 23 h 30 after 4Z 493 arrives on the timetable: more than half a day, so not a connection we count.