5Z 255 then 4Z 178 at Johannesburg
Port Elizabeth → Johannesburg → Gaborone
Timetable, Johannesburg time
17:155Z 255 from Port Elizabeth at the gate
16:504Z 178 to Gaborone leaves the gate
23 h 35 apart on the timetable, overnight
4Z 178 leaves 23 h 35 after 5Z 255 arrives on the timetable: more than half a day, so not a connection we count.