Canada has nearly ten million square kilometers of land. ~78,000 km2 (for Scotland) is barely a drop in the bucket, and ~600 km2 (for T&C) is a rounding error on a rounding error.
OTOH, adding ~5,000,000 people (Scotland) to a population of ~35,000,000 is a big jump. ~31,000 people (T&C), not so much. Either way, Canadaβs population density, once either/both countriesβ land and people are accounted for, is going nowhere but up.