WN 291 then WN 1809 at Denver
Phoenix Sky Harbor → Denver → Spokane
Timetable, Denver time
08:10WN 291 from Phoenix Sky Harbor at the gate
20:50WN 1809 to Spokane leaves the gate
12 h 40 apart on the timetable
WN 1809 leaves 12 h 40 after WN 291 arrives on the timetable: more than half a day, so not a connection we count.