5Z 611 then SA 327 at Johannesburg
Margate → Johannesburg → Cape Town
Timetable, Johannesburg time
13:405Z 611 from Margate at the gate
11:10SA 327 to Cape Town leaves the gate
21 h 30 apart on the timetable, overnight
SA 327 leaves 21 h 30 after 5Z 611 arrives on the timetable: more than half a day, so not a connection we count.