AA 2011 then AA 1203 at Charlotte
Houston → Charlotte → Buffalo
Timetable, Charlotte time
09:34AA 2011 from Houston at the gate
08:55AA 1203 to Buffalo leaves the gate
23 h 21 apart on the timetable, overnight
AA 1203 leaves 23 h 21 after AA 2011 arrives on the timetable: more than half a day, so not a connection we count.