UA 3236 then DL 1775 at Houston
Midland → Houston → Los Angeles
Timetable, Houston time
18:30UA 3236 from Midland at the gate
15:58DL 1775 to Los Angeles leaves the gate
21 h 28 apart on the timetable, overnight
DL 1775 leaves 21 h 28 after UA 3236 arrives on the timetable: more than half a day, so not a connection we count.