2I 1650 then DL 1199 at Atlanta
Cincinnati → Atlanta → Chicago O'Hare
Timetable, Atlanta time
06:042I 1650 from Cincinnati at the gate
22:40DL 1199 to Chicago O'Hare leaves the gate
16 h 36 apart on the timetable
DL 1199 leaves 16 h 36 after 2I 1650 arrives on the timetable: more than half a day, so not a connection we count.