UA 3914 then UA 277 at Houston
Chicago → Houston → Fort Lauderdale
Timetable, Houston time
23:27UA 3914 from Chicago at the gate
16:55UA 277 to Fort Lauderdale leaves the gate
17 h 28 apart on the timetable, overnight
UA 277 leaves 17 h 28 after UA 3914 arrives on the timetable: more than half a day, so not a connection we count.