As far as i know, the gaudiya vaishnavas (iskcon people) are dualists. For them Brahman is Krishna.
According to them, Brahman (Krishna) and the jivas are always separate. The jivas always remain subservient to Him and can never merge into Him, but rather spends time with him in Goloka.
My question is, what do gaudiya vaishnavas (iskcon people) mean by "jivas being amsha or fragmental parts of Krishna?"