These are because some suggest that the attacking detached force from Hiyodorigoe was, in realty, Yoshitsuna's army, which is said to have advanced from the mountain, and this story was later replaced with Yoshitsune's military exploit.
このことから、鵯越から攻撃した別働隊とは実は山方から攻め寄せたとされる行綱の軍勢であり、これが後に義経の軍功とすり替わったとする見方もある。