It seems, based on the latest stories of a fumbling bishop, that the bishops got his real message clear enough. Ratzinger acted if they talked about women priests or optional clerical celibacy. As for the sex abuse scandal, as long as the bishop was not the sex abuser, the bishop was safe no matter what he did. I think the U.S. bishops, and perhaps those in Australia, did get Gahl's message of assuring due process for the priests - because they did not get the message about justice for the victims.
Maybe Francis will see that he must act to bring credibility back to the Church by holding bishops accountable.