4Z 231 then SA 419 at Johannesburg
Nampula → Johannesburg → Port Elizabeth
Timetable, Johannesburg time
16:304Z 231 from Nampula at the gate
16:00SA 419 to Port Elizabeth leaves the gate
23 h 30 apart on the timetable, overnight
SA 419 leaves 23 h 30 after 4Z 231 arrives on the timetable: more than half a day, so not a connection we count.