WN 209 then DL 8847 at Denver
St Louis → Denver → Vancouver
Timetable, Denver time
18:50WN 209 from St Louis at the gate
17:05DL 8847 to Vancouver leaves the gate
22 h 15 apart on the timetable, overnight
DL 8847 leaves 22 h 15 after WN 209 arrives on the timetable: more than half a day, so not a connection we count.