At the risk of going further down the rabbit hole, I would say discussions about "consciousness" depend on how the term itself is defined in the discussion.
It seems to me "consciousness" is on a continuum among all living beings. I'll draw the line at "inanimate" objects having "consciousness."
By defining "consciousness" narrowly or broadly, two speakers using the same word can talk right past each other.
I'll admit that I hadn't heard the term "bicameral mind" before TauPhi 's post above. In looking at the Wikipedia articles (I know - deep research ) it strikes me as similar to the "Ancient Greeks couldn't see 'blue'" arguments because they wrote things like "wine-dark sea" (or that's how οἶνοψ πόντος has been traditionally translated; it has been convincingly stated that it doesn't refer to hue but rather to light/dark differentiation or other qualities). It also strikes me as similar to the discredited idea of the "triune brain" (reptile/mammal/human) that Dr. Lisa Feldman Barrett (among others) has done such a good job debunking.