SA 562 then 4Z 769 at Johannesburg
Durban → Johannesburg → Upington
Timetable, Johannesburg time
16:30SA 562 from Durban at the gate
15:554Z 769 to Upington leaves the gate
23 h 25 apart on the timetable, overnight
4Z 769 leaves 23 h 25 after SA 562 arrives on the timetable: more than half a day, so not a connection we count.