4Z 920 then SA 531 at Johannesburg
Cape Town → Johannesburg → Durban
Timetable, Johannesburg time
09:054Z 920 from Cape Town at the gate
07:30SA 531 to Durban leaves the gate
22 h 25 apart on the timetable, overnight
SA 531 leaves 22 h 25 after 4Z 920 arrives on the timetable: more than half a day, so not a connection we count.