An expired link and a copy already downloaded

A fictional team shares a document with one authorized external collaborator and sets the sharing link to expire at the end of the week. A supplied audit note records that the collaborator downloaded a copy during the permitted period. After the link expires, a colleague claims that every copy everywhere has been deleted. Another separates future access through that link from an existing downloaded file, recipient responsibilities and any actual retention agreement. This written exercise sends no document and changes no sharing setting. The learner should identify which restriction the expiry can establish, what wider claim is unsupported and which actual permissions, contractual scope and incident procedures matter to an accountable review.