UA 564 then UA 3755 at Houston
Cleveland → Houston → Lubbock
Timetable, Houston time
08:21UA 564 from Cleveland at the gate
22:10UA 3755 to Lubbock leaves the gate
13 h 49 apart on the timetable
UA 3755 leaves 13 h 49 after UA 564 arrives on the timetable: more than half a day, so not a connection we count.