Your Canadian content is being displaced by US sources inside AI Overviews.
Google's AI Overviews are not automatically geographically targeted in the way that standard organic results can be filtered by country. For many Canadian queries, the AI Overview draws from US-based sources that rank highly globally even when Canadian-specific information exists and is more relevant to the searcher. Canadian businesses that do not structure their content for explicit AIO eligibility are losing citation positions to US competitors who have more optimised content architectures, regardless of the relevance of their information to a Canadian audience.