WN 757 then DL 2543 at Denver
Cleveland → Denver → Seattle
Timetable, Denver time
18:45WN 757 from Cleveland at the gate
18:33DL 2543 to Seattle leaves the gate
23 h 48 apart on the timetable, overnight
DL 2543 leaves 23 h 48 after WN 757 arrives on the timetable: more than half a day, so not a connection we count.