>>3664
Sure why not? What follows is a bit of a tangent, but it's the closest example I can relate.

I can induce a lucid dream and within the dream hold a brief conversation with a dream character. The dream character seem autonomous. After I wake, I can remember what the dream character said and share that conversation with a third party. Maybe the dream character asked me to tell the third party something and I speak on their behalf.

Is that dream character a temporary second personality being emulated in my brain? The third party can't tell and I can't tell either.