4Z 778 then SA 359 at Johannesburg
Sishen → Johannesburg → Cape Town
Timetable, Johannesburg time
19:004Z 778 from Sishen at the gate
17:30SA 359 to Cape Town leaves the gate
22 h 30 apart on the timetable, overnight
SA 359 leaves 22 h 30 after 4Z 778 arrives on the timetable: more than half a day, so not a connection we count.