SA 556 then GE 123 at Johannesburg
Durban → Johannesburg → Cape Town
Timetable, Johannesburg time
14:20SA 556 from Durban at the gate
13:00GE 123 to Cape Town leaves the gate
22 h 40 apart on the timetable, overnight
GE 123 leaves 22 h 40 after SA 556 arrives on the timetable: more than half a day, so not a connection we count.