AA 9928 then AA 3648 at O'Hare
New York LaGuardia → Chicago → Greensboro
Timetable, Chicago time
06:45AA 9928 from New York LaGuardia at the gate
19:15AA 3648 to Greensboro leaves the gate
12 h 30 apart on the timetable
AA 3648 leaves 12 h 30 after AA 9928 arrives on the timetable: more than half a day, so not a connection we count.