F9 1384 then UA 423 at Philadelphia
Charlotte → Philadelphia → Houston
Timetable, Philadelphia time
13:25F9 1384 from Charlotte at the gate
12:40UA 423 to Houston leaves the gate
23 h 15 apart on the timetable, overnight
UA 423 leaves 23 h 15 after F9 1384 arrives on the timetable: more than half a day, so not a connection we count.