Before you can define “Kol HaTorah” you have to define the word “Torah.”
The way it’s used, it usually refers to one of two things:
1. The first five books of the Tanach.
2. The entire corpus of Halachic/Aggadic literature.
Any other definitions are just arbitrary decisions made by the person making the statement.
Also, why is this thread tagged with “Apikuris?” Was the OP hoping I’d respond?
The Wolf