As a MKE native, that duo was indeed a 'thing' but I was also a young adult during their prime and Neil was definitely not cool so not really in my orbit of interest. i basically lumped them in with other 'local' acts that I didn't pay any attention towards. I was more of a Violent Femmes, BoDeans, Citizen King, The Gufs, local band supporter during those times.
that said, I really enjoyed the movie.