So the king has similar authority in both Canada and the UK (plus 12 other countries). With respect to Canada, the king is just as much Canadian as he is British (or Australian, etc). With respect to the monarchy, each realm (country) in the commonwealth is on an equal footing with each other.
So the UK has no more bearing on Canadian law than Canada has on UK law.
Canada has a king.
The UK also has a king.
They happen to be the same person.
So the king has similar authority in both Canada and the UK (plus 12 other countries). With respect to Canada, the king is just as much Canadian as he is British (or Australian, etc). With respect to the monarchy, each realm (country) in the commonwealth is on an equal footing with each other.
So the UK has no more bearing on Canadian law than Canada has on UK law.