4Z 554 then 5Z 866 at Johannesburg
Durban → Johannesburg → Cape Town
Timetable, Johannesburg time
12:254Z 554 from Durban at the gate
11:455Z 866 to Cape Town leaves the gate
23 h 20 apart on the timetable, overnight
5Z 866 leaves 23 h 20 after 4Z 554 arrives on the timetable: more than half a day, so not a connection we count.