I am doing a kitchen remodel and the village is requiring smoke detectors installed as per the IRC. I failed the inspection because in the attic I daisy chained 3/8" greenfield between the smoke detectors. The inspector states the NEC prohibits a combined length of more than six feet. I cannot find anything in article 348 that prohibits this. Article 250.118 is on grounding and the way I interpret it, I have to have a ground wire installed on lengths that exceed six feet. Am I missing something here?