UA 419 then UA 447 at Denver
Appleton → Denver → Knoxville
Timetable, Denver time
10:33UA 419 from Appleton at the gate
10:15UA 447 to Knoxville leaves the gate
23 h 42 apart on the timetable, overnight
UA 447 leaves 23 h 42 after UA 419 arrives on the timetable: more than half a day, so not a connection we count.