4Z 762 then SA 319 at Johannesburg
Upington → Johannesburg → Cape Town
Timetable, Johannesburg time
10:104Z 762 from Upington at the gate
09:25SA 319 to Cape Town leaves the gate
23 h 15 apart on the timetable, overnight
SA 319 leaves 23 h 15 after 4Z 762 arrives on the timetable: more than half a day, so not a connection we count.