According to the initial definitions you had used, the 'framework' is the person. "you", and any other tulpas there, are "original identities" - seeing as 'you' and any tulpas are intrinsically the same things.
A host can dissipate and it would have no more impact on the brain than a tulpa dissipating would provided the tulpa(s) in that host's syetem were well developed
I see. Then, to be clear, are you saying that tulpas are all merely roleplaying - where an individual pretends to be multiple people long enough that it is automatic?
Functionally they're the exact same. Everything a person can do a tulpa can do and vice versa. Regardless of what you believe tulpas to be, this is true
Basically, our wild guess into the dark is that Tulpas, hosts, and other thoughtforms, are made of memories, and we guess that such thoughtforms are run on the same infrastructure no matter what origin
I see consciousness as a sort of "hub" that exists to take in and organize sensory input. A tulpa is a second "hub" that you create by directing sensory input (in the form of narration and forcing) towards something you assign the label of "not me". If you keep directing this input at something you don't see as yourself, a new "hub" will form around that input you keep throwing out
When it comes to focused tasks, such as solving complicated math problems that involve juggling larger amounts of active memory, it is absolutely one stream of thought.
Instead of seeing tulpas as streams of thought, it might be helpful to see them as "observation points", aka the "hub" thing I mentioned earlier. They don't necessarily need to be thinking in conjunction with the host to exist. Thinking and observing/experiencing are not the same thing
3:54 AM
This observation and experience is what makes up consciousness.
That said, again, none of this indicates that a tulpa and host aren't the same intrinsic thing, since they can do the same general tasks that indicate they are people. They can't override the capability of the brain, but they do absolutely exist as separate identities that can directly communicate, disagree, and otherwise act like two people would if they were chatting without physical contact and had access to the same information.