Yes, I’ve studied his history. Have an extensive biography of him done by Heinz Hohne in my library. Canaris was Prussian and despised Hitler from the beginning, but was good at playing his hand.
He and Wild Bill Donovan were counter parts, some suspect they had some contact at a point.
There’s some speculation, that had it not been for the Munich Agreement, the Generals were planning a coup against Hitler in 1938, but had to call it off after Munich.