AA 9928 then AA 3177 at O'Hare
New York LaGuardia → Chicago → Philadelphia
Timetable, Chicago time
06:45AA 9928 from New York LaGuardia at the gate
21:11AA 3177 to Philadelphia leaves the gate
14 h 26 apart on the timetable
AA 3177 leaves 14 h 26 after AA 9928 arrives on the timetable: more than half a day, so not a connection we count.