F9 1441 then UA 669 at O'Hare
Atlanta → Chicago → New York LaGuardia
Timetable, Chicago time
12:51F9 1441 from Atlanta at the gate
10:05UA 669 to New York LaGuardia leaves the gate
21 h 14 apart on the timetable, overnight
UA 669 leaves 21 h 14 after F9 1441 arrives on the timetable: more than half a day, so not a connection we count.