This is about the body and blood, the Eucharist. It actually doesn’t matter if you think the body and blood is actually Jesus or not. The same outcome happens. If you think it actually is Jesus, then you take his real body and blood, and it’s not just a symbol now, and you remember what He did for you and that you are in constant communication or communion with Him. If you believe that it is just a symbol, then when you take it, and it is actually his body and blood, then you are taking the real body and blood whether you believe it or not. All we need to know is that Jesus died for us and we take communion or break bread to remember what He did and that we are in constant communion with Him. Communion literally means sharing thoughts and feelings. That is what we do with Jesus when we take the body and blood.