4Z 121 then GE 111 at Johannesburg
Windhoek → Johannesburg → Cape Town
Timetable, Johannesburg time
11:104Z 121 from Windhoek at the gate
09:30GE 111 to Cape Town leaves the gatealso 5Z 866
22 h 20 apart on the timetable, overnight
GE 111 leaves 22 h 20 after 4Z 121 arrives on the timetable: more than half a day, so not a connection we count.