WN 4752 then UA 2680 at Phoenix
Omaha → Phoenix → Houston
Timetable, Phoenix time
07:00WN 4752 from Omaha at the gate
19:53UA 2680 to Houston leaves the gate
12 h 53 apart on the timetable
UA 2680 leaves 12 h 53 after WN 4752 arrives on the timetable: more than half a day, so not a connection we count.