DL 1680 then AA 2361 at Atlanta
Cincinnati → Atlanta → Chicago O'Hare
Timetable, Atlanta time
21:43DL 1680 from Cincinnati at the gate
12:51AA 2361 to Chicago O'Hare leaves the gate
15 h 08 apart on the timetable, overnight
AA 2361 leaves 15 h 08 after DL 1680 arrives on the timetable: more than half a day, so not a connection we count.