4Z 760 then FA 420 at Johannesburg
Mthatha → Johannesburg → Durban
Timetable, Johannesburg time
17:204Z 760 from Mthatha at the gate
17:05FA 420 to Durban leaves the gate
23 h 45 apart on the timetable, overnight
FA 420 leaves 23 h 45 after 4Z 760 arrives on the timetable: more than half a day, so not a connection we count.