QF 7550 then AA 2548 at O'Hare
New York JFK → Chicago → Philadelphia
Timetable, Chicago time
20:00QF 7550 from New York JFK at the gate
19:20AA 2548 to Philadelphia leaves the gate
23 h 20 apart on the timetable, overnight
AA 2548 leaves 23 h 20 after QF 7550 arrives on the timetable: more than half a day, so not a connection we count.