Double split and reconnection body experiment for atheist experience

Imagine there being you, and an exactly identical structure and functioning copy of you. They, of course, are producing exactly the same behavior at the same time because they are functioning identically. You are instantly split down the middle of the nose head to toe in half and recombined with the opposite halves from the replica. Now there are again two live identically structured and functioning human bodies. Your original body is now part of two bodies each having exactly half of your original brain. The question is: "What are you now consciously experiencing?" Both of them are behaving like they are alive and both of them call themselves the same names, believe that they are the same person that they were before, say they have the same feelings and emotions at the same time, have the same memories etc. They do this just like they did before the split. There are several possibilities. You no longer experience anything because you are now dead. One of them carries on your consciousness and the other does not. Or both of them are producing a consciousness that you experience. I say the simplest explanation is that both of bodies are producing a consciousness that you experience. Not only that, I predict that both of the bodies produced a consciousness you experienced before the split and recombination. Matt believes that it is the body (not the structure and functioning of the body) that caries or connects the self through space and time. He would say that the self goes with the body that has the most of original's body's matter. Or he would say that the original did not survive. He has no idea or any way of knowing how much matter is needed from the original to be in the new original to perpetuate the original self into the new body. The needed percentage of matter could be any amount and there is no way of knowing for sure. He does not even have a theory of how specific matter perpetuates the self in one body through space and time. It is just based on his belief. Other wise, I think Matt is very bright! What do you think and why?