SA 566 then SA 359 at Johannesburg
Durban → Johannesburg → Cape Town
Timetable, Johannesburg time
18:10SA 566 from Durban at the gate
17:30SA 359 to Cape Town leaves the gate
23 h 20 apart on the timetable, overnight
SA 359 leaves 23 h 20 after SA 566 arrives on the timetable: more than half a day, so not a connection we count.