4Z 177 then SA 551 at Johannesburg
Gaborone → Johannesburg → Durban
Timetable, Johannesburg time
13:254Z 177 from Gaborone at the gate
12:50SA 551 to Durban leaves the gate
23 h 25 apart on the timetable, overnight
SA 551 leaves 23 h 25 after 4Z 177 arrives on the timetable: more than half a day, so not a connection we count.