AA 2258 then BR 658 at O'Hare
Las Vegas → Chicago → Toronto Pearson
Timetable, Chicago time
12:52AA 2258 from Las Vegas at the gate
11:30BR 658 to Toronto Pearson leaves the gate
22 h 38 apart on the timetable, overnight
BR 658 leaves 22 h 38 after AA 2258 arrives on the timetable: more than half a day, so not a connection we count.