AA 9909 then WN 1591 at Phoenix
Salt Lake City → Phoenix → Dallas
Timetable, Phoenix time
14:30AA 9909 from Salt Lake City at the gate
11:40WN 1591 to Dallas leaves the gate
21 h 10 apart on the timetable, overnight
WN 1591 leaves 21 h 10 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.