UA 1966 then UA 3755 at Houston
Austin → Houston → Lubbock
Timetable, Houston time
06:28UA 1966 from Austin at the gate
22:10UA 3755 to Lubbock leaves the gate
15 h 42 apart on the timetable
UA 3755 leaves 15 h 42 after UA 1966 arrives on the timetable: more than half a day, so not a connection we count.