Seems doubtful, or you would have remembered what it actually teaches, have a familiarity with its cosmology, philosophical content, theology, special terms, integrity of principles, values, meanings.
I remember quite a bit: The ascension career, the Isle of Paradise and Havona, the mansion worlds, the morontia soul, finaliters, Caligastia and the Lucifer Rebellion, trinities, triodities, and so on. But if you want to insist that I'm lying, have at it. I don't need to prove myself to you.
I see none. The content speaks for itself.
No, it really doesn't. That's the problem. No matter how much you like the content, and elevate your liking by calling it "reality response", unless you can verify it's claims for yourself (and for a large amount of the content of the Urantia Book, you can't), you must decide whether the authors are in a position to know what they claim to know. And to decide that, you must know something about them.
One thing we know for certain about the authors of the Urantia Book is that they commit plagiarism. The evidence is right there in the pages for all to see. And I will add that they commit gratuitous plagiarism. That is, the concepts expressed using plagiarized sources could just as easily be expressed without plagiarizing. I have asked more than once in this these posts whether anyone can point to any concept in the Urantia Book that couldn't be conveyed without plagiarizing. There has been no answer, and for good reason. There isn't any. Some may choose to ignore this fact; I do not. You may decide that your reality response to the book supersedes this fact; I do not.