Lots of people,beleive there is a God, and think they communicate with that God, but they do not communicate with the God unless they are born again. Christ said as much. Those folks who,don’t know,christ have simply,created a God in their own image, and they refuse to obey the true God of,the Bible, preferring to,worship,the God of their own making because that false God is more amenable to their sin driven desires- their lower selves.
Your analogy is faulty on many levels. You do not have to be born again to have a relationship with God. The concept of Born again is relatively recent in the context of religion that goes back thousands of years.