AC 8749 then AA 5553 at Charlotte
Toronto → Charlotte → Allentown
Timetable, Charlotte time
22:00AC 8749 from Toronto at the gate
21:35AA 5553 to Allentown leaves the gate
23 h 35 apart on the timetable, overnight
AA 5553 leaves 23 h 35 after AC 8749 arrives on the timetable: more than half a day, so not a connection we count.