AA 2590 then 7L 789 at O'Hare
Santa Ana → Chicago → Baku
Timetable, Chicago time
15:03AA 2590 from Santa Ana at the gate
10:007L 789 to Baku leaves the gate
18 h 57 apart on the timetable, overnight
7L 789 leaves 18 h 57 after AA 2590 arrives on the timetable: more than half a day, so not a connection we count.