Well there ya go.
Sorry. You’re right. I misread and got confused. McCabe was referred a year or so ago. He has no fear of being arrested. However the OIG actually declined to prosecute some one much worse. Peter Strzok. Mr. Insurance Policy.
While the investigative summary does not name the DAD, it does reference the OIG report on FBI misconduct during the 2016 election. In that report, which came out last year, the DAD repeatedly mentioned is Peter Strzok.