AA 9928 then UA 2487 at O'Hare
New York LaGuardia → Chicago → Grand Rapids
Timetable, Chicago time
06:45AA 9928 from New York LaGuardia at the gate
21:50UA 2487 to Grand Rapids leaves the gate
15 h 05 apart on the timetable
UA 2487 leaves 15 h 05 after AA 9928 arrives on the timetable: more than half a day, so not a connection we count.