When using Advanced Search it may return an object you do not have access to. If you try to click on the link it will tell you "Not Authorized".
However, it doesn't tell you who the owner is or give you a way to inquire or request access to the object.
As an enhancement, it would be great if on the "Not Authorized" page it had a link for you to request access and give a reason for the request, which would result in an email going to the owner that contained a link for "Approve" or "Reject (with reason)".
I believe this is available on the space level, but it might need to be turned on on an instance. I will take a closer look.
FYI we have something like this setup in IMLCZO Clowder