AA 3865 then UA 3454 at Charlotte
Hilton Head → Charlotte → Newark
Timetable, Charlotte time
13:48AA 3865 from Hilton Head at the gate
13:22UA 3454 to Newark leaves the gate
23 h 34 apart on the timetable, overnight
UA 3454 leaves 23 h 34 after AA 3865 arrives on the timetable: more than half a day, so not a connection we count.