SA 35 then 4Z 789 at Johannesburg
Gaborone → Johannesburg → Port Elizabeth
Timetable, Johannesburg time
13:35SA 35 from Gaborone at the gate
13:204Z 789 to Port Elizabeth leaves the gate
23 h 45 apart on the timetable, overnight
4Z 789 leaves 23 h 45 after SA 35 arrives on the timetable: more than half a day, so not a connection we count.