WN 3525 then AA 420 at Denver
Chicago Midway → Denver → Dallas-Fort Worth
Timetable, Denver time
20:20WN 3525 from Chicago Midway at the gate
15:08AA 420 to Dallas-Fort Worth leaves the gate
18 h 48 apart on the timetable, overnight
AA 420 leaves 18 h 48 after WN 3525 arrives on the timetable: more than half a day, so not a connection we count.