F9 1596 then DL 1332 at Atlanta
Chicago O'Hare → Atlanta → Miami
Timetable, Atlanta time
13:32F9 1596 from Chicago O'Hare at the gate
11:00DL 1332 to Miami leaves the gate
21 h 28 apart on the timetable, overnight
DL 1332 leaves 21 h 28 after F9 1596 arrives on the timetable: more than half a day, so not a connection we count.