UA 2124 then UA 3755 at Houston
New Orleans → Houston → Lubbock
Timetable, Houston time
08:23UA 2124 from New Orleans at the gate
22:10UA 3755 to Lubbock leaves the gate
13 h 47 apart on the timetable
UA 3755 leaves 13 h 47 after UA 2124 arrives on the timetable: more than half a day, so not a connection we count.