As Tomte points out, this is largely a guessing game we are playing. How can we really know one way or the other? But I concede, German intelligence is likely

As Tomte points out, this is largely a guessing game we are playing. How can we really know one way or the other? But I concede, German intelligence is likely the weaker link in European intelligence agencies (and weaker than American as well), not from lack of skill or knowhow, but a political inability to pursue it. Germany's recent history has left Germans rather on the unfavourable side of intelligence agencies and surveillance. I would even imagine the Allies imposing restrictions on the Germans following the Second World War.