WN 262 then B6 994 at Denver
Las Vegas → Denver → Boston
Timetable, Denver time
17:40WN 262 from Las Vegas at the gate
14:00B6 994 to Boston leaves the gate
20 h 20 apart on the timetable, overnight
B6 994 leaves 20 h 20 after WN 262 arrives on the timetable: more than half a day, so not a connection we count.