DL 1668 then DL 200 at Atlanta
Indianapolis → Atlanta → Johannesburg
Timetable, Atlanta time
21:54DL 1668 from Indianapolis at the gate
21:05DL 200 to Johannesburg leaves the gate
23 h 11 apart on the timetable, overnight
DL 200 leaves 23 h 11 after DL 1668 arrives on the timetable: more than half a day, so not a connection we count.