DL 2247 then BR 658 at O'Hare
Salt Lake City → Chicago → Toronto Pearson
Timetable, Chicago time
11:55DL 2247 from Salt Lake City at the gate
11:30BR 658 to Toronto Pearson leaves the gate
23 h 35 apart on the timetable, overnight
BR 658 leaves 23 h 35 after DL 2247 arrives on the timetable: more than half a day, so not a connection we count.