Is it possible to have a soulbond that functions as a tulpa-like being? Usually I hear about soulbonds existing only as headmates, but I interact with mine in the same way that people interact with thoughtforms and tulpas; they’re external (entirely outside of my mind), they cannot ‘front’ or take over for me, and I can feel their presence as a semi-physical sensation.

While most of the soulbonders I’ve known have experienced their bonds functionally as headmates, I have also read posts of some people experiencing them as external. Particularly I recall reading about a few soulbonders who could ‘see’ where their bond was standing in the room, and ‘feel’ when their bond touched them, in, as you put, a semi-physical way. So the experience is not unheard of!