I think Larry King took unscreened calls on his radio talk show in the 1980s. (I called him once about Sandy Koufax, a classmate of his.)
Remember the business/money man talk radio host that was popular back in the 1980s. I think his name was “Michael Jackson”. Tall guy. So popular that he was also making TV appearances. Probably the Dave Ramsey of the 80s.
Not sure of his name, maybe it was not “Michael Jackson”