SA 223 then 4Z 921 at Johannesburg
São Paulo → Johannesburg → Cape Town
Timetable, Johannesburg time
07:45SA 223 from São Paulo at the gate
07:304Z 921 to Cape Town leaves the gate
23 h 45 apart on the timetable, overnight
4Z 921 leaves 23 h 45 after SA 223 arrives on the timetable: more than half a day, so not a connection we count.