UA 5355 then G4 3021 at Denver
Salt Lake City → Denver → Knoxville
Timetable, Denver time
12:24UA 5355 from Salt Lake City at the gate
08:26G4 3021 to Knoxville leaves the gate
20 h 02 apart on the timetable, overnight
G4 3021 leaves 20 h 02 after UA 5355 arrives on the timetable: more than half a day, so not a connection we count.