4Z 221 then 4Z 555 at Johannesburg
Tete → Johannesburg → Durban
Timetable, Johannesburg time
15:254Z 221 from Tete at the gate
15:054Z 555 to Durban leaves the gate
23 h 40 apart on the timetable, overnight
4Z 555 leaves 23 h 40 after 4Z 221 arrives on the timetable: more than half a day, so not a connection we count.