You know what, I would love to be a mage that can finish his incantations by saying "yeah, what he said". Why go chantless when you can have someone do the chanting for you.
Reading again, I am starting to think that mage is reaching a lv no other wizard have ever done, he finished a spell with someone else words, that had not a single drop of magin inside, with just a ""Yeah! What he said!", that's one step away from casting with no chant, that old man is scary.