4Z 754 then SA 319 at Johannesburg
Mthatha → Johannesburg → Cape Town
Timetable, Johannesburg time
09:504Z 754 from Mthatha at the gate
09:25SA 319 to Cape Town leaves the gate
23 h 35 apart on the timetable, overnight
SA 319 leaves 23 h 35 after 4Z 754 arrives on the timetable: more than half a day, so not a connection we count.