4Z 770 then GE 125 at Johannesburg
Upington → Johannesburg → Cape Town
Timetable, Johannesburg time
19:154Z 770 from Upington at the gate
19:00GE 125 to Cape Town leaves the gate
23 h 45 apart on the timetable, overnight
GE 125 leaves 23 h 45 after 4Z 770 arrives on the timetable: more than half a day, so not a connection we count.