Well basically what I was saying is that a spiritual person is someone to whom spirituality (gods, afterlife, a moral code that has some sort of assumed supernatural or divine basis, etc), is not the same thing as a
religion, which is to some just an institution of spirituality (church/temple services, well defined religious texts, strictly defined set of morals and ethics, regular and systematized observances of religious holidays/sacrifices/customs, etc). While there is certainly some cross-over between the two groups, they can, at times, be very different things.
It doesn't really make sense AFAICT though as religion basically means connect to God. Spiritual is in my view just an expression of that. On the other hand, arguably anybody is spiritual if their "God" is in fact their ultimate reality.
In the mind of someone who is "spiritual, not religious", religion is not the connection to the Divine, per se, rather it is the institution of that connection. I suppose you could say that religion is an institution that supplies spirituality, much like how schools supply education. You don't need to go to school to be educated, you can do that yourself if you are resourceful enough, but it is how most people pursue their learning. The same is true of religion and spiritualism: you don't need to be a committed member of an organized religion to actually have a connection to the Divine, but religion is the medium through which most seek some sort of divine communion.