F9 1846 then DL 2738 at Atlanta
Cincinnati → Atlanta → Chicago O'Hare
Timetable, Atlanta time
19:03F9 1846 from Cincinnati at the gate
15:50DL 2738 to Chicago O'Hare leaves the gate
20 h 47 apart on the timetable, overnight
DL 2738 leaves 20 h 47 after F9 1846 arrives on the timetable: more than half a day, so not a connection we count.