WN 4626 then AA 420 at Denver
Nashville → Denver → Dallas-Fort Worth
Timetable, Denver time
18:00WN 4626 from Nashville at the gate
15:08AA 420 to Dallas-Fort Worth leaves the gate
21 h 08 apart on the timetable, overnight
AA 420 leaves 21 h 08 after WN 4626 arrives on the timetable: more than half a day, so not a connection we count.