UA 477 then UA 3755 at Houston
Memphis → Houston → Lubbock
Timetable, Houston time
08:28UA 477 from Memphis at the gate
22:10UA 3755 to Lubbock leaves the gate
13 h 42 apart on the timetable
UA 3755 leaves 13 h 42 after UA 477 arrives on the timetable: more than half a day, so not a connection we count.