UA 5197 then AA 2202 at O'Hare
Albany (New York) → Chicago → Buffalo
Timetable, Chicago time
15:45UA 5197 from Albany (New York) at the gate
15:19AA 2202 to Buffalo leaves the gate
23 h 34 apart on the timetable, overnight
AA 2202 leaves 23 h 34 after UA 5197 arrives on the timetable: more than half a day, so not a connection we count.