WN 347 then UA 323 at Denver
Birmingham (Alabama) → Denver → Kalispell
Timetable, Denver time
18:45WN 347 from Birmingham (Alabama) at the gate
11:15UA 323 to Kalispell leaves the gate
16 h 30 apart on the timetable, overnight
UA 323 leaves 16 h 30 after WN 347 arrives on the timetable: more than half a day, so not a connection we count.