WN 262 then UA 27 at Denver
Las Vegas → Denver → London
Timetable, Denver time
17:40WN 262 from Las Vegas at the gate
17:35UA 27 to London leaves the gate
23 h 55 apart on the timetable, overnight
UA 27 leaves 23 h 55 after WN 262 arrives on the timetable: more than half a day, so not a connection we count.