AA 9909 then WN 1153 at Phoenix
Salt Lake City → Phoenix → Denver
Timetable, Phoenix time
14:30AA 9909 from Salt Lake City at the gate
14:25WN 1153 to Denver leaves the gate
23 h 55 apart on the timetable, overnight
WN 1153 leaves 23 h 55 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.