As a result, sections of the Abwehr were incorporated into RSHA Amt VI SD-Ausland and therefore placed under Schellenberg's command.[76] Assumption of these powers made Schellenberg the "absolute master" of Nazi intelligence".[77] He was infamous for his "office fortress" desk, which had two automatic guns built into it that could be fired by the touch of a button.[78] According to the memoirs of SS intelligence officer Wilhelm Hoettl, Schellenberg was very suspicious of Gestapo Chief Müller, whom he claimed to have evidence against by way of radio surveillance recordings (allegedly revealing Müller's plans to work with the Soviets); when he informed then RSHA chief Ernst Kaltenbrunner of possessing proof to that end, he was ignored.[79] Kaltenbrunner disliked Schellenberg, perhaps due to his direct access to Himmler, and complained about him in particular on a number of occasions.[80] Despite Kaltenbrunner's animosity towards Schellenberg, the latter's soothing manners kept him in good graces with Himmler and allowed him to "retain the ear of the SS overlord".[81]