UA 4232 then UA 3755 at Houston
Harlingen → Houston → Lubbock
Timetable, Houston time
08:37UA 4232 from Harlingen at the gate
22:10UA 3755 to Lubbock leaves the gate
13 h 33 apart on the timetable
UA 3755 leaves 13 h 33 after UA 4232 arrives on the timetable: more than half a day, so not a connection we count.