AA 1224 then DL 917 at JFK
Chicago O'Hare → New York → Salt Lake City
Timetable, New York time
10:09AA 1224 from Chicago O'Hare at the gate
09:30DL 917 to Salt Lake City leaves the gate
23 h 21 apart on the timetable, overnight
DL 917 leaves 23 h 21 after AA 1224 arrives on the timetable: more than half a day, so not a connection we count.