AA 9928 then DL 2646 at O'Hare
New York LaGuardia → Chicago → Boston
Timetable, Chicago time
06:45AA 9928 from New York LaGuardia at the gate
19:45DL 2646 to Boston leaves the gate
13 h apart on the timetable
DL 2646 leaves 13 h after AA 9928 arrives on the timetable: more than half a day, so not a connection we count.