4Z 554 then SA 327 at Johannesburg
Durban → Johannesburg → Cape Town
Timetable, Johannesburg time
11:154Z 554 from Durban at the gate
11:10SA 327 to Cape Town leaves the gate
23 h 55 apart on the timetable, overnight
SA 327 leaves 23 h 55 after 4Z 554 arrives on the timetable: more than half a day, so not a connection we count.