is the mind, body, duality possibly part of the conflict within the theist's and atheist's belief system?
I suspect so.
The threshold problem is 'What do you mean, 'mind', exactly?
Which usually leads to the obvious point that a real thing is real (has objective existence, is found in nature &c) and an 'immaterial' (or 'supernatural' or 'spiritual') thing is not real (has no objective existence, is not found in nature &c) and therefore can only be imaginary.
In other words, the idea of a real immaterial mind is incoherent.
After that come all the other usual questions, each ending with the one question, 'How do you know?' For a small sample, consider ─
─ What is the mind? What is it composed of? Where did it originate? How did it evolve? Do all living things have one?
─ What does the mind want a body for? What can the mind do that the brain can't, and vice versa?
─ How did the mind get from wherever it came from to the body? Why that body and not another?
─ What methods and resources does the mind employ in order to perceive reality, to think, feel, remember, reason?
─ How come the link between brain function and mind function is so all-encompassing? For instance, how come what fouls up brain function fouls up mind function? Foul-ups include fatigue, sleep deprivation, anoxia, genetics, trauma, disease, drugs and alcohol, stress, starvation, dehydration, and so on.
─ if the mind is immaterial then it's not affected by physical forces eg gravity. So how does the mind stay with its body as the body moves around the room, the room rotates with the earth, the earth orbits the sun, the sun moves with the circling galaxy, the galaxy moves relative to other galaxies &c?
If any dualist here can clear these points up (including 'how do you know?') I'd be interested to hear.