WN 585 then UA 5886 at Denver
Phoenix Sky Harbor → Denver → Springfield
Timetable, Denver time
17:55WN 585 from Phoenix Sky Harbor at the gate
17:53UA 5886 to Springfield leaves the gate
23 h 58 apart on the timetable, overnight
UA 5886 leaves 23 h 58 after WN 585 arrives on the timetable: more than half a day, so not a connection we count.