AA 525 then DL 917 at JFK
Miami → New York → Salt Lake City
Timetable, New York time
09:43AA 525 from Miami at the gate
09:30DL 917 to Salt Lake City leaves the gate
23 h 47 apart on the timetable, overnight
DL 917 leaves 23 h 47 after AA 525 arrives on the timetable: more than half a day, so not a connection we count.