NO WEAKEST LINK. “Like the armor, chainmail in viruses provides a thin yet durable layer to endure the internal force exerted by the encapsulated dsDNA. In both cases, chainmail may have been developed for its ability to maintain structural integrity. Indeed, unlike Borromean rings, breaking a single ring in a chainmail does not affect the integrity of the whole mail.” (dsDNA = double stranded DNA).
http://www.aimspress.com/article/10.3934/biophy.2015.2.200/fulltext.html