UA 4301 then UA 4022 at Houston
Lubbock → Houston → Omaha
Timetable, Houston time
18:41UA 4301 from Lubbock at the gate
11:55UA 4022 to Omaha leaves the gate
17 h 14 apart on the timetable, overnight
UA 4022 leaves 17 h 14 after UA 4301 arrives on the timetable: more than half a day, so not a connection we count.