4Z 185 then 4Z 921 at Johannesburg
Gaborone → Johannesburg → Cape Town
Timetable, Johannesburg time
08:154Z 185 from Gaborone at the gate
07:304Z 921 to Cape Town leaves the gate
23 h 15 apart on the timetable, overnight
4Z 921 leaves 23 h 15 after 4Z 185 arrives on the timetable: more than half a day, so not a connection we count.