Did you book these flights as a multi-city or did you book it as a stopover? It would seem to me that you booked it as the former so it will calculate the points required for each sector separately. In which case you would have a within Pacific zone flight followed by a separate Pacific to North America Zone flight. For the second one that looks like a Pacific to Atlantic zone flight followed by an Atlantic zone to North America zone flight. Had you booked this as a stopover then they would’ve computed the flight pricing as Pacific zone to North America zone trip even though you have a stopover of a day or more in the Atlantic or Pacific zones.
One additional thought, if you are able to find those itineraries, you should in theory be able to call up Air Canada to make the booking, reading out the flights you have in mind. Since they involve a connection of under 24 hours that would be considered a connecting flight rather than a stopover. If they try to charge you a phone booking fee, reminded them that this itinerary cannot be booked online, and thus the fee needs to be waived.