Didnīt Hitler simply ignore everything Gehlen told? Or even what the other sources mentioned for example the Red Army attacking in the Stalingrad area. I think Hitler even called them lies. Everything AH did not like was "lies". Iīm not saying Gehlen was exceptionally good Iīm saying any piece of info he gathered Hitler called them all lies because they did not say the German army was winning easily.
Wolff
General Karl Wolff
However, once Gehlen came into the meeting with the Fuehrer in the Chancellery, and after informing Hitler that, despite seventeen months of fighting since the start of (Operation) Barbarossa, and the six or seven million killed or captured Soviets, we could expect a resurgence in the spring. He was especially frightening with his estimates of future partisans we could expect to encounter. Hitler threatened to have him placed in a sanitarium if he ever spouted such nonsense again, and threw him out. This was November 1942 I believe, and General of Fighters [Adolf Galland, [Rudolf von] Falkenhahn, and [Hans] Baur were there, along with Goering, Himmler and several others whom I cannot remember. It has been a long time. Gehlen always told the truth as he saw it and infuriated Hitler on several occasions, such as his denouncing key individuals and calling certain gauleiters incompetent, blaming much of the problem on them.