ET 809 then GE 123 at Johannesburg
Addis Ababa → Johannesburg → Cape Town
Timetable, Johannesburg time
13:30ET 809 from Addis Ababa at the gate
13:00GE 123 to Cape Town leaves the gate
23 h 30 apart on the timetable, overnight
GE 123 leaves 23 h 30 after ET 809 arrives on the timetable: more than half a day, so not a connection we count.