2I 1650 then DL 2815 at Atlanta
Cincinnati → Atlanta → Key West
Timetable, Atlanta time
06:042I 1650 from Cincinnati at the gate
18:08DL 2815 to Key West leaves the gate
12 h 04 apart on the timetable
DL 2815 leaves 12 h 04 after 2I 1650 arrives on the timetable: more than half a day, so not a connection we count.