FA 411 then FN 8220 at Johannesburg
Durban → Johannesburg → Harare
Timetable, Johannesburg time
07:35FA 411 from Durban at the gate
06:55FN 8220 to Harare leaves the gate
23 h 20 apart on the timetable, overnight
FN 8220 leaves 23 h 20 after FA 411 arrives on the timetable: more than half a day, so not a connection we count.