WN 4626 then UA 447 at Denver
Nashville → Denver → Knoxville
Timetable, Denver time
18:00WN 4626 from Nashville at the gate
11:18UA 447 to Knoxville leaves the gate
17 h 18 apart on the timetable, overnight
UA 447 leaves 17 h 18 after WN 4626 arrives on the timetable: more than half a day, so not a connection we count.