SA 306 then 5Z 350 at Johannesburg
Cape Town → Johannesburg → Richards Bay
Timetable, Johannesburg time
09:00SA 306 from Cape Town at the gate
06:305Z 350 to Richards Bay leaves the gate
21 h 30 apart on the timetable, overnight
5Z 350 leaves 21 h 30 after SA 306 arrives on the timetable: more than half a day, so not a connection we count.