The very first level confusion occurs when we as Sons of God attempt to "cause God".
Whenever an effect, or a lower level, attempts to cause effects in the very cause that caused it, ie a higher level, that is level confusion.
The first level confusion was the separation from God itself.
God is cause. God creates and produces effects. We are his creations/effects.
As effects, effects do not cause the thing that caused them.
Sons of God do not have the ability to cause God. If they did, and this is what the whole separation is about, this would mean that we can produce effects in God and therefore change God. If they were to do that, they would be capable of destroying the very causal power which maintains their own existence, which is impossible.
There is a cause-effect distinction between what is God and what is a Son of God. God is "first cause". Sons of God are His effect. His Sons have been given the ability to cause ie create in God's likeness and their own, but they do not have the ability to actually cause anything other than this.
When Sons of God attempt to cause something unlike God, or something which goes against the freedom of will granted by God to extend love, "fiction" happens. A dream of impossibilities. Make-believe worlds and pretend bodies. That all comes from wishful thinking. And it's all a level confusion.
The attempt by the Son of God to cause His Father, to produce effects in the father, is the idea of sin. To make God change and be attackable/hurtable/modifyable is the very idea of sin. It is also the same thing as the authority problem - believing we have power to will against God's will.
So the very moment we entertained this tiny mad idea of being separate from God, it was an idea of being able to cause effects in God and therefore usurp his will. This was the first act of level confusion.
Every single thing that takes place inside the egoic dream of impossibilities and death, is also level confused. Absolutely every part of the ego is level confused. It is all entirely an attempt to reverse cause and effect. It is all a belief in magic and victimhood. And it is all impossible.