AC 1803 then AC 543 at Toronto Pearson
Kingston → Toronto → Seattle (SEA)
Timetable, Toronto time
20:25AC 1803 from Kingston at the gate
18:25AC 543 to Seattle (SEA) leaves the gate
22 h apart on the timetable, overnight
AC 543 leaves 22 h after AC 1803 arrives on the timetable: more than half a day, so not a connection we count.