UA 3758 then UA 311 at Houston
Fort Worth → Houston → Philadelphia
Timetable, Houston time
18:41UA 3758 from Fort Worth at the gate
18:36UA 311 to Philadelphia leaves the gate
23 h 55 apart on the timetable, overnight
UA 311 leaves 23 h 55 after UA 3758 arrives on the timetable: more than half a day, so not a connection we count.