SA 546 then 4Z 162 at Johannesburg
Durban → Johannesburg → Lusaka
Timetable, Johannesburg time
12:10SA 546 from Durban at the gate
11:304Z 162 to Lusaka leaves the gate
23 h 20 apart on the timetable, overnight
4Z 162 leaves 23 h 20 after SA 546 arrives on the timetable: more than half a day, so not a connection we count.