B6 519 then DL 2269 at Atlanta
New York JFK → Atlanta → Cincinnati
Timetable, Atlanta time
09:16B6 519 from New York JFK at the gate
21:20DL 2269 to Cincinnati leaves the gate
12 h 04 apart on the timetable
DL 2269 leaves 12 h 04 after B6 519 arrives on the timetable: more than half a day, so not a connection we count.