UA 1886 then UA 3755 at Houston
San Francisco → Houston → Lubbock
Timetable, Houston time
05:41UA 1886 from San Francisco at the gate
22:10UA 3755 to Lubbock leaves the gate
16 h 29 apart on the timetable
UA 3755 leaves 16 h 29 after UA 1886 arrives on the timetable: more than half a day, so not a connection we count.