Complex sentence: There has been speculation that "Drak Pack" drew its inspiration from this series; however, one could also argue that both series were inspired by the even earlier animated series "Groovie Goolies".
Split into simpler sentences: There has been speculation that "Drak Pack" drew its inspiration from this series. However, one could also argue that both series were inspired by the even earlier animated series "Groovie Goolies".