Short circuit in C # 6 Elvis (short circuit)

Why is this C # code throwing an exceptional exception?

bool boolResult = SomeClass?.NullableProperty.ItsOkProperty ?? false;

      

        
        
        
      

    

isn't the truth of the Elvis operator supposed to stop evaluating (short-circuiting) after NullableProperty evaluates to null?

In my understanding, the above line of code is a shortcut to:

bool boolResult 
if(SomeClass != null)
    if(SomeClass.NullableProperty != null)
        boolResult = SomeClass.NullableProperty.ItsOkProperty;
    else
        boolResult = false;
else
    boolResult = false;

      

        
        
        
      

    

I was wrong?

EDIT: Now I understand why this is wrong, the line of code is actually translating to something similar to:

bool boolResult 
if(SomeClass != null)
    boolResult = SomeClass.NullableProperty.ItsOkProperty;
else
    boolResult = false;

      

        
        
        
      

    

And it throws because NullableProperty is null ...