AA 2574 then WN 2423 at Phoenix
St Louis → Phoenix → Dallas
Timetable, Phoenix time
10:32AA 2574 from St Louis at the gate
05:40WN 2423 to Dallas leaves the gate
19 h 08 apart on the timetable, overnight
WN 2423 leaves 19 h 08 after AA 2574 arrives on the timetable: more than half a day, so not a connection we count.