DL 1358 then WN 1749 at Denver
Seattle → Denver → Dallas
Timetable, Denver time
12:17DL 1358 from Seattle at the gate
05:35WN 1749 to Dallas leaves the gate
17 h 18 apart on the timetable, overnight
WN 1749 leaves 17 h 18 after DL 1358 arrives on the timetable: more than half a day, so not a connection we count.