“Halacha dictates that no sefer gets placed on top of a Chumash. Some individuals have a hergesh that dictates that nothing is placed on top of a Tanya, known as the Torah Shebichsav of Chassidus.”
So this is your “explaining it to us like pre-schoolers?” Telling us exactly what we already explicitly said we understood? Saying basically exactly what I predicted you would say?
So, the custom is that the Tanya has more kedushah than the Mishnah or Gemara. The fact that you avoided stating it explicitly as long as you could shows that you realize it’s not something that’s going to go over well with others. Are you going to assume that’s because we’re all just “haters?”