DT 575 then 4Z 106 at Johannesburg
Luanda → Johannesburg → Harare
Timetable, Johannesburg time
23:15DT 575 from Luanda at the gate
14:404Z 106 to Harare leaves the gate
15 h 25 apart on the timetable, overnight
4Z 106 leaves 15 h 25 after DT 575 arrives on the timetable: more than half a day, so not a connection we count.