F9 1441 then AA 3177 at O'Hare
Atlanta → Chicago → Philadelphia
Timetable, Chicago time
09:00F9 1441 from Atlanta at the gate
21:11AA 3177 to Philadelphia leaves the gate
12 h 11 apart on the timetable
AA 3177 leaves 12 h 11 after F9 1441 arrives on the timetable: more than half a day, so not a connection we count.