If a woman makes an agent to receive her document of divorce, can that agent make another agent in his place? No-  in the opinion of Ramban because words are not handed over to a messenger. [Laws of Divorce 1:13][You can not make a messenger to say something. You can make a messenger to do something.] I thought as is was explaining this,  and later saw that Rav Shach himself asks the obvious question, "What words?" I imagine this must have been the approach of the Rambam who makes no distinction between messengers. But to the Ramban this seems to be a significant objection. If a messenger to receive a ''get''  can not make another messenger in his place because words are not handed over to a messenger, then why can she make a messenger in the first place?