AC 7885 then AC 8889 at Toronto Pearson
Montréal → Toronto → St Louis
Timetable, Toronto time
15:46AC 7885 from Montréal at the gate
14:10AC 8889 to St Louis leaves the gate
22 h 24 apart on the timetable, overnight
AC 8889 leaves 22 h 24 after AC 7885 arrives on the timetable: more than half a day, so not a connection we count.