AA 2574 then WN 4146 at Phoenix
St Louis → Phoenix → Chicago Midway
Timetable, Phoenix time
10:36AA 2574 from St Louis at the gate
10:05WN 4146 to Chicago Midway leaves the gate
23 h 29 apart on the timetable, overnight
WN 4146 leaves 23 h 29 after AA 2574 arrives on the timetable: more than half a day, so not a connection we count.