UA 5574 then UA 3755 at Houston
Lafayette → Houston → Lubbock
Timetable, Houston time
06:29UA 5574 from Lafayette at the gate
22:10UA 3755 to Lubbock leaves the gate
15 h 41 apart on the timetable
UA 3755 leaves 15 h 41 after UA 5574 arrives on the timetable: more than half a day, so not a connection we count.