QF 7554 then UA 503 at O'Hare
New York JFK → Chicago → Fort Lauderdale
Timetable, Chicago time
17:30QF 7554 from New York JFK at the gate
15:37UA 503 to Fort Lauderdale leaves the gate
22 h 07 apart on the timetable, overnight
UA 503 leaves 22 h 07 after QF 7554 arrives on the timetable: more than half a day, so not a connection we count.