WN 1968 then WN 581 at Denver
Spokane → Denver → Nashville
Timetable, Denver time
08:45WN 1968 from Spokane at the gate
07:55WN 581 to Nashville leaves the gate
23 h 10 apart on the timetable, overnight
WN 581 leaves 23 h 10 after WN 1968 arrives on the timetable: more than half a day, so not a connection we count.