I wouldn't be surprised, either.

Well, let's put it this way, the only made guy to ever flip in Chicago was Nick Calabrese.

Frank Calabrese was recorded on a wire telling his son that it was exactly as it was done in the Godfather films.

Nick Calabrese identified 60 made members of the Chicago Outfit to the feds, reported, by Chuck Goudie "with many still on the streets."

Meaning he probably identified every single made member he knew, including, at the very least, those who were already in prison and, more likely in my view, many deceased ones.

As far as I know that is really the only solid information we have to this day on making people in Chicago.