4Z 770 then SA 359 at Johannesburg
Upington → Johannesburg → Cape Town
Timetable, Johannesburg time
19:154Z 770 from Upington at the gate
17:30SA 359 to Cape Town leaves the gate
22 h 15 apart on the timetable, overnight
SA 359 leaves 22 h 15 after 4Z 770 arrives on the timetable: more than half a day, so not a connection we count.