Nantes involvement isn’t anything to do with negligence as I see it, the taxi scenario is relevant at that point, but the bigger picture is it MacKay was acting as Nantes agent and made arrangements to deliver him to us safely, then I think at that point you have to consider were Nantes responsible for his safe delivery, in the same way as if I buy something on eBay I am the contract is complete. If it gets lost in transit due to the courier employed by the seller, I sure as hell ain’t paying for it.