AA 2975 then AA 73 at O'Hare
Minneapolis → Chicago → Buffalo
Timetable, Chicago time
17:26AA 2975 from Minneapolis at the gate
07:00AA 73 to Buffalo leaves the gate
13 h 34 apart on the timetable, overnight
AA 73 leaves 13 h 34 after AA 2975 arrives on the timetable: more than half a day, so not a connection we count.