AA 9782 then 7L 789 at O'Hare
Boston → Chicago → Baku
Timetable, Chicago time
13:14AA 9782 from Boston at the gate
10:007L 789 to Baku leaves the gate
20 h 46 apart on the timetable, overnight
7L 789 leaves 20 h 46 after AA 9782 arrives on the timetable: more than half a day, so not a connection we count.