在动态强制转换后调用特定的类方法-奇怪的行为

这是一个与我发布的另一个问题不同的问题,我有以下代码:

class Base
{
public:
    Base()
    {

    };


    virtual void Method()
    {
        cout << "Base Method";
    }
};

class Derived : public Base
{
public:
    virtual void Method()
    {
        cout << "Override Method";
    }
};


class Derived2 : public Derived
{
public:

    Derived2()
    {

        cout << "Derived2 constructor";
    }
    void Method()
    {
        cout << "Override2 Method";
    }
};

int main()
{

    Base *myPointer = new Derived();

    dynamic_cast<Derived2*>(myPointer)->Derived2::Method();

    Sleep(700);

    delete myPointer;

    return 0;
}

如果我写

dynamic_cast<Derived2*>(myPointer)->Method();

出现故障(dynamic_cast返回NULL,NULL->Method()引发异常),这正是我所期望的,但如果我写

dynamic_cast<Derived2*>(myPointer)->Derived2::Method();

该函数甚至在不调用Derived2构造函数的情况下就成功了。方法甚至不是一个静态函数,这里发生了什么?