AA 4803 then DL 917 at JFK
Cincinnati → New York → Salt Lake City
Timetable, New York time
10:01AA 4803 from Cincinnati at the gate
09:30DL 917 to Salt Lake City leaves the gate
23 h 29 apart on the timetable, overnight
DL 917 leaves 23 h 29 after AA 4803 arrives on the timetable: more than half a day, so not a connection we count.