4Z 173 then 4Z 921 at Johannesburg
Gaborone → Johannesburg → Cape Town
Timetable, Johannesburg time
08:454Z 173 from Gaborone at the gate
07:304Z 921 to Cape Town leaves the gate
22 h 45 apart on the timetable, overnight
4Z 921 leaves 22 h 45 after 4Z 173 arrives on the timetable: more than half a day, so not a connection we count.