SA 566 then 5Z 204 at Johannesburg
Durban → Johannesburg → East London
Timetable, Johannesburg time
18:10SA 566 from Durban at the gate
18:005Z 204 to East London leaves the gate
23 h 50 apart on the timetable, overnight
5Z 204 leaves 23 h 50 after SA 566 arrives on the timetable: more than half a day, so not a connection we count.