UA 2154 then WN 3794 at Denver
Boise → Denver → Palm Springs
Timetable, Denver time
08:28UA 2154 from Boise at the gate
20:55WN 3794 to Palm Springs leaves the gate
12 h 27 apart on the timetable
WN 3794 leaves 12 h 27 after UA 2154 arrives on the timetable: more than half a day, so not a connection we count.