AA 6291 then 7L 789 at O'Hare
Oklahoma City → Chicago → Baku
Timetable, Chicago time
15:30AA 6291 from Oklahoma City at the gate
10:007L 789 to Baku leaves the gate
18 h 30 apart on the timetable, overnight
7L 789 leaves 18 h 30 after AA 6291 arrives on the timetable: more than half a day, so not a connection we count.