UA 3914 then UA 5039 at Houston
Chicago → Houston → Meridian
Timetable, Houston time
23:27UA 3914 from Chicago at the gate
17:10UA 5039 to Meridian leaves the gate
17 h 43 apart on the timetable, overnight
UA 5039 leaves 17 h 43 after UA 3914 arrives on the timetable: more than half a day, so not a connection we count.