(2)Regardless of sub-section (1), if the the generality of Assessing Officer or the Joint Commissioner (Appeals) or the Commissioner (Appeals) in the course of any proceeding under this Act in respect of any such association of persons as is referred to in that sub-section is satisfied that the association of persons was guilty of any of the acts specified in Chapter XXI, he may impose or direct the imposition of a penalty as per the provisions of that Chapter.