UA 5355 then AA 1310 at Denver
Salt Lake City → Denver → Miami
Timetable, Denver time
12:24UA 5355 from Salt Lake City at the gate
12:20AA 1310 to Miami leaves the gate
23 h 56 apart on the timetable, overnight
AA 1310 leaves 23 h 56 after UA 5355 arrives on the timetable: more than half a day, so not a connection we count.