B6 519 then DL 4097 at Atlanta
New York JFK → Atlanta → South Bend
Timetable, Atlanta time
09:16B6 519 from New York JFK at the gate
09:10DL 4097 to South Bend leaves the gate
23 h 54 apart on the timetable, overnight
DL 4097 leaves 23 h 54 after B6 519 arrives on the timetable: more than half a day, so not a connection we count.