AA 2223 then DL 2570 at O'Hare
New York LaGuardia → Chicago → Boston
Timetable, Chicago time
10:59AA 2223 from New York LaGuardia at the gate
10:35DL 2570 to Boston leaves the gate
23 h 36 apart on the timetable, overnight
DL 2570 leaves 23 h 36 after AA 2223 arrives on the timetable: more than half a day, so not a connection we count.