AA 2771 then 7L 789 at O'Hare
Denver → Chicago → Baku
Timetable, Chicago time
10:30AA 2771 from Denver at the gate
10:007L 789 to Baku leaves the gate
23 h 30 apart on the timetable, overnight
7L 789 leaves 23 h 30 after AA 2771 arrives on the timetable: more than half a day, so not a connection we count.