F9 1704 then UA 1066 at Houston
Phoenix → Houston → Denver
Timetable, Houston time
09:50F9 1704 from Phoenix at the gate
21:52UA 1066 to Denver leaves the gate
12 h 02 apart on the timetable
UA 1066 leaves 12 h 02 after F9 1704 arrives on the timetable: more than half a day, so not a connection we count.