WN 347 then UA 447 at Denver
Birmingham (Alabama) → Denver → Knoxville
Timetable, Denver time
18:45WN 347 from Birmingham (Alabama) at the gate
11:18UA 447 to Knoxville leaves the gate
16 h 33 apart on the timetable, overnight
UA 447 leaves 16 h 33 after WN 347 arrives on the timetable: more than half a day, so not a connection we count.