UA 3463 then AA 1642 at Charlotte
Newark → Charlotte → Greenville-Spartanburg
Timetable, Charlotte time
16:52UA 3463 from Newark at the gate
14:30AA 1642 to Greenville-Spartanburg leaves the gate
21 h 38 apart on the timetable, overnight
AA 1642 leaves 21 h 38 after UA 3463 arrives on the timetable: more than half a day, so not a connection we count.