AA 3852 then 7L 789 at O'Hare
Chattanooga → Chicago → Baku
Timetable, Chicago time
11:04AA 3852 from Chattanooga at the gate
10:007L 789 to Baku leaves the gate
22 h 56 apart on the timetable, overnight
7L 789 leaves 22 h 56 after AA 3852 arrives on the timetable: more than half a day, so not a connection we count.