In this model, there is no way to know this divine being or connect with him in a meaningful way.
It's one or the other.
You can't have it both ways.
If events in one dimension affect events in the other dimension then, logically, it should go both ways.
Paul Tillich dealt with this conumdrum by positing that all knowing about an other is through God, making of all relationships a triangle with no contact between the points of the base. The one dimensional aspect of God fits neatly with some aspects of string theory. Each particulate of matter is interdependent only insofar as it is linked with God, otherwise it is isolated. God is the glue that holds it all together. He is also the channel through which particulates know each other. We can not know God since He is the link to our knowing. This describes an absolutely personal God, not an abstract phenomenon.
[[If events in one dimension affect events in the other dimension then, logically, it should go both ways]]
Not if there’s a check valve
Interesting principle. Let's test it. Give me one example in which your adulthood has affected your childhood.