AA 518 then 7L 789 at O'Hare
San Diego → Chicago → Baku
Timetable, Chicago time
12:42AA 518 from San Diego at the gate
10:007L 789 to Baku leaves the gate
21 h 18 apart on the timetable, overnight
7L 789 leaves 21 h 18 after AA 518 arrives on the timetable: more than half a day, so not a connection we count.