FA 491 then 4Z 176 at Johannesburg
Durban → Johannesburg → Gaborone
Timetable, Johannesburg time
09:35FA 491 from Durban at the gate
07:254Z 176 to Gaborone leaves the gate
21 h 50 apart on the timetable, overnight
4Z 176 leaves 21 h 50 after FA 491 arrives on the timetable: more than half a day, so not a connection we count.