It is likely that there was some sort of friction between the Imperial court and the Atsuta-jingu Shrine about religious rites for the Kusanagi sword, which became a sacred treasure, and that Emperor Ankan and Emperor Senka, whose mother was from the Owari clan, had something to do with it.
おそらく、尾張氏の娘を母とする安閑、宣化天皇の関係で、神器化された草薙剣の祭祀を巡って、朝廷と熱田神宮に何らかの軋轢が在ったと思われる。