adding a customGPT URL to the LiveAvatar knowledge base.

I have a customGPT with a large amount of documents uploaded. Is the URL field in my Live Avatar a place to paste this link? Will the Avatar then use the customGPT to provide answers. Or will this just dilute the responses from the text i have also added to the avatar knowledge base field? and will it add to delays in providing answers (lag)? Basically, shall i keep it simple or do i make my avatar smarter and connect it to my customGPT?