DL 1680 then AA 873 at Atlanta
Cincinnati → Atlanta → Chicago O'Hare
Timetable, Atlanta time
21:43DL 1680 from Cincinnati at the gate
11:07AA 873 to Chicago O'Hare leaves the gate
13 h 24 apart on the timetable, overnight
AA 873 leaves 13 h 24 after DL 1680 arrives on the timetable: more than half a day, so not a connection we count.