Still, Mr. Hall states in his above post [reflecting the opinion in his community], that one can fulfill his obligation of talmud torah through learning Chumash,
It is DR. Hall, and actually it is a Gemorah Nedarim, and all you really need is Shema (8a IIRC).
So I assume Navi has Halachic applications? Why should Navi be any different?
numerous passages of Talmud Agaddah which state that one must learn Gemora solely in order to connect with God.
Never heard of Talmud Agaddah. Can you point me to one such passage, and what Talmud Agaddah is? Who wrote it, etc.
I’m not going to go through the rest of it, just quote a Rashi Regarding Korbanos and Rayach Nichoach:
“I am satisfied, for I have spoken and My will has been fulfilled”.
Nothing about Sefiros or any other mystical stuff going on in Shomayim (which you have still not attempted to define).