WN 319 then UA 27 at Denver
Bozeman → Denver → London
Timetable, Denver time
17:55WN 319 from Bozeman at the gate
17:35UA 27 to London leaves the gate
23 h 40 apart on the timetable, overnight
UA 27 leaves 23 h 40 after WN 319 arrives on the timetable: more than half a day, so not a connection we count.