They are parallel and distinct processes. They can be carried out independently of each other. There is the parliamentary process, with all the procedures and codes that govern what you do. I really am no expert in that area.
Furthermore, as a citizen residing in Canada, you have the right to make an access to information request. If you're not satisfied with the answer you receive, you can make a complaint to the Office of the Commissioner. That has happened in the past. In some specific cases I am aware of, the member of Parliament went through both processes. They operate in parallel and are governed by different procedures. An investigation by the Office of the Commissioner is not the same thing as a parliamentary debate among politicians. They are two completely different avenues.