AA 1313 then WN 1749 at Denver
Philadelphia → Denver → Dallas
Timetable, Denver time
11:21AA 1313 from Philadelphia at the gate
05:35WN 1749 to Dallas leaves the gate
18 h 14 apart on the timetable, overnight
WN 1749 leaves 18 h 14 after AA 1313 arrives on the timetable: more than half a day, so not a connection we count.