AC 8787 then AC 7058 at Toronto Pearson
Washington National → Toronto → Montréal
Timetable, Toronto time
20:28AC 8787 from Washington National at the gate
09:00AC 7058 to Montréal leaves the gate
12 h 32 apart on the timetable, overnight
AC 7058 leaves 12 h 32 after AC 8787 arrives on the timetable: more than half a day, so not a connection we count.