UA 4301 then UA 3902 at Houston
Lubbock → Houston → Newark
Timetable, Houston time
18:41UA 4301 from Lubbock at the gate
11:00UA 3902 to Newark leaves the gate
16 h 19 apart on the timetable, overnight
UA 3902 leaves 16 h 19 after UA 4301 arrives on the timetable: more than half a day, so not a connection we count.