AA 894 then 7L 789 at O'Hare
Boston → Chicago → Baku
Timetable, Chicago time
14:40AA 894 from Boston at the gate
10:007L 789 to Baku leaves the gate
19 h 20 apart on the timetable, overnight
7L 789 leaves 19 h 20 after AA 894 arrives on the timetable: more than half a day, so not a connection we count.