5Z 251 then BP 206 at Johannesburg
Port Elizabeth → Johannesburg → Gaborone
Timetable, Johannesburg time
20:105Z 251 from Port Elizabeth at the gate
15:40BP 206 to Gaborone leaves the gate
19 h 30 apart on the timetable, overnight
BP 206 leaves 19 h 30 after 5Z 251 arrives on the timetable: more than half a day, so not a connection we count.