DL 1323 then AA 2917 at Miami
Atlanta → Miami → Chicago O'Hare
Timetable, Miami time
16:00DL 1323 from Atlanta at the gate
15:39AA 2917 to Chicago O'Hare leaves the gate
23 h 39 apart on the timetable, overnight
AA 2917 leaves 23 h 39 after DL 1323 arrives on the timetable: more than half a day, so not a connection we count.