AA 4757 then 7L 789 at O'Hare
Pittsburgh → Chicago → Baku
Timetable, Chicago time
14:02AA 4757 from Pittsburgh at the gate
10:007L 789 to Baku leaves the gate
19 h 58 apart on the timetable, overnight
7L 789 leaves 19 h 58 after AA 4757 arrives on the timetable: more than half a day, so not a connection we count.