UA 3236 then UA 3305 at Houston
Midland → Houston → Indianapolis
Timetable, Houston time
18:30UA 3236 from Midland at the gate
16:15UA 3305 to Indianapolis leaves the gate
21 h 45 apart on the timetable, overnight
UA 3305 leaves 21 h 45 after UA 3236 arrives on the timetable: more than half a day, so not a connection we count.