AC 1803 then AC 1922 at Toronto Pearson
Kingston → Toronto → Ottawa
Timetable, Toronto time
20:25AC 1803 from Kingston at the gate
17:35AC 1922 to Ottawa leaves the gate
21 h 10 apart on the timetable, overnight
AC 1922 leaves 21 h 10 after AC 1803 arrives on the timetable: more than half a day, so not a connection we count.