4Z 307 then SA 563 at Johannesburg
Kasane → Johannesburg → Durban
Timetable, Johannesburg time
15:554Z 307 from Kasane at the gate
15:10SA 563 to Durban leaves the gate
23 h 15 apart on the timetable, overnight
SA 563 leaves 23 h 15 after 4Z 307 arrives on the timetable: more than half a day, so not a connection we count.