AA 506 then 7L 789 at O'Hare
Charlotte → Chicago → Baku
Timetable, Chicago time
14:30AA 506 from Charlotte at the gate
10:007L 789 to Baku leaves the gate
19 h 30 apart on the timetable, overnight
7L 789 leaves 19 h 30 after AA 506 arrives on the timetable: more than half a day, so not a connection we count.