That's for the witnesses to the supposed atrocities at A-B. Nessie heartily endorses that claim and states that only revisionists reject such testimony when it doesn't suit their narrative.Historians, courts and journalists all accept universal agreement from witnesses...
Now let's consider the Treblinka witnesses. Multiple eyewitnesses state that the gas chambers were hermetically sealed. It's true that a court did in fact agree with the testimony of one witness, Abraham Rosenberg, who testified under oath that the gas chambers were hermetically sealed.
In the case of the A-B witnesses, their testimony is in "universal agreement" and must be taken as the truth. However, at Treblinka, the witnesses are in "universal agreement" that the gas chamber was hermetically sealed but Nessie declares that to be false. Witnesses made mistakes, exaggerated or engaged in hyperbole to enhance their stories.
So tell us, Nessie, why are A-B witnesses in "universal agreement" telling the truth but the witnesses who are in "universal agreement" at Treblinka rejected?