AC 8749 then AA 5266 at Charlotte
Toronto → Charlotte → Lexington
Timetable, Charlotte time
22:00AC 8749 from Toronto at the gate
21:45AA 5266 to Lexington leaves the gate
23 h 45 apart on the timetable, overnight
AA 5266 leaves 23 h 45 after AC 8749 arrives on the timetable: more than half a day, so not a connection we count.