AA 4528 then DL 2646 at O'Hare
Norfolk → Chicago → Boston
Timetable, Chicago time
07:29AA 4528 from Norfolk at the gate
19:45DL 2646 to Boston leaves the gate
12 h 16 apart on the timetable
DL 2646 leaves 12 h 16 after AA 4528 arrives on the timetable: more than half a day, so not a connection we count.