I just am not a good writer and typist so I took the easy way out
and did a Google search, I had only two choices 1) from a xXX.edu 2)Chabad. I opted for Chabad I have gotten some pretty good stuff from them. Truth is I did not read this particular one.
As far as I know consensus is issur D’Rbanan. Your Rav was referring to a ???? ???? ??? ???? ??-? which is Mutar in a Issur D’Rabann (Pri Megadim ?)
In the case of a D’Orayasah the Chazon Ish is not a factor