If I may speak in English, it would be easier for me to explain the concepts.
Essentially, the role of the Library of Parliament is to provide as sound an analytical framework as possible, in response to the needs of parliamentarians to understand the proposals and representations brought before Parliament by the government.
In terms of the parliamentary budget officer, this position represents a capacity to improve the economic analysis or understanding of the forces in the economy that are shaking the outcomes, which in turn will determine the fiscal resources available to the government. I don't think this is a contradiction. It's really improving and providing a better analytical interpretation of what is happening in the economy, so that members have a better understanding of how to interpret the government's representations to them with respect to their economic position and the fiscal numbers.