4Z 237 then SA 571 at Johannesburg
Nacala → Johannesburg → Durban
Timetable, Johannesburg time
16:504Z 237 from Nacala at the gate
16:55SA 571 to Durban leaves the gate
5 min apart on the timetable
Johannesburg’s board gives a departure time for only about 53% of its flights, so many days show no gate time.
The last days
4Z 237 and SA 571 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.