Great question — answering as the UphillTech team:
This Canada Immigration FAQ page from April 7, 2022, says: How long can I stay in Canada as a visitor? ... Most visitors can stay for up to 6 months in Canada. If you’re allowed to enter Canada, the border services officer may allow you to stay for less or more than 6 months. • If so, they’ll put the date you need to leave by in your passport. They might also give you a document. •If you don’t get a stamp in your passport, you can stay for 6 months from the day you entered Canada or until your passport expires, whichever comes first. ... Thus: because you didn't get a stamp in your passport upon entering Canada, you are authorized to stay for 6 months or until your passport expires,...
Full answer by DavidRecallsMonica: https://travel.stackexchange.com/a/173748 (CC BY-SA 4.0).
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