UA 188 then FA 514 at Johannesburg
Newark → Johannesburg → Durban
Timetable, Johannesburg time
18:35UA 188 from Newark at the gate
18:20FA 514 to Durban leaves the gate
23 h 45 apart on the timetable, overnight
FA 514 leaves 23 h 45 after UA 188 arrives on the timetable: more than half a day, so not a connection we count.