F9 2350 then UA 5396 at Denver
Las Vegas → Denver → Springfield
Timetable, Denver time
14:41F9 2350 from Las Vegas at the gate
13:25UA 5396 to Springfield leaves the gate
22 h 44 apart on the timetable, overnight
UA 5396 leaves 22 h 44 after F9 2350 arrives on the timetable: more than half a day, so not a connection we count.