AA 9909 then UA 2418 at Phoenix
Salt Lake City → Phoenix → Denver
Timetable, Phoenix time
14:30AA 9909 from Salt Lake City at the gate
13:00UA 2418 to Denver leaves the gate
22 h 30 apart on the timetable, overnight
UA 2418 leaves 22 h 30 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.