WN 4144 then UA 1913 at Denver
St Louis → Denver → Pasco
Timetable, Denver time
19:55WN 4144 from St Louis at the gate
19:20UA 1913 to Pasco leaves the gate
23 h 25 apart on the timetable, overnight
UA 1913 leaves 23 h 25 after WN 4144 arrives on the timetable: more than half a day, so not a connection we count.