AA 9909 then WN 1280 at Phoenix
Salt Lake City → Phoenix → Denver
Timetable, Phoenix time
14:30AA 9909 from Salt Lake City at the gate
13:40WN 1280 to Denver leaves the gate
23 h 10 apart on the timetable, overnight
WN 1280 leaves 23 h 10 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.