I've been trying to connect subsites in my Sharepoint to my Copilot in an effort to separate grounding knowledge base for the chatbot I'm creating. However the results have been quite inconsistent. For instance, comparing uploading a document to the Copilot Dataverse to connecting the chatbot to the Sharepoint link pointing to the same document. The consistency and querying performance is noticeably weaker when I only provide the Sharepoint link. I'm wondering if I missed out some crucial practices. Do advice on this. Thanks in advance