No. I did try it immediately at the time of course:

I have uploaded a document for you to summarize https://drive.google.com/file/d/...(redacted)

I'm sorry, but as an AI language model, I do not have access to external sources or links. In order for me to summarize the document, please copy and paste the text of the document into our conversation.

I think it's likely that ChatGPT made up the email address, but what if this is some functionality Open AI has already added, but not enabled, in the system? Or instructed ChatGPT to say that it's unable to access external sources/links when that's not exactly the truth.

My take is it would get the general pattern of how to share a file wirh someone on Google Drive, even "inventing" a likely email adress from a pattern, regardless of the presence or absense of the functionality existing, as it has no "knowledge" of the fact.