DL 2804 then 7L 789 at O'Hare
Boston → Chicago → Baku
Timetable, Chicago time
21:51DL 2804 from Boston at the gate
10:007L 789 to Baku leaves the gate
12 h 09 apart on the timetable, overnight
7L 789 leaves 12 h 09 after DL 2804 arrives on the timetable: more than half a day, so not a connection we count.