Have him "mirror" LITERALLY and VERBATIM what you have said. As insipid as that sounds, it actually works and is necessary when you are dealing with misinterpretation.
After he mirrors, if he doesn't understand, you get to clarify. Then he mirrors your clarification.
I can relate to what you say about the way you think--seeing all the endless connections instead of a simplified answer or linear path (unless I'm misinterpreting
Analytical thinking can get in one's way in intimate and emotional relationships. Analyzing can keep you from finding out what is really hiding behind or under some frustration, concern, or other feeling you might have.
They may all be there and connected, but it can help to take just one at a time.
Then again, I could be misinterpreting you completely; in which case, feel free to disregard whatever doesn't apply!