for me, depersonalization/derealization is when things don't feel real, i don't feel real, etc. but don't necessarily feel/hear one of the others there at that time..if things feel off inside at the same time, i can figure out something is happening inside. but sometimes that type of dissociation can occur from anxiety/stress and not always be related to one of the others/DID.

co-consciousness for me feels different (though they can also overlap at times), and i can feel/hear one of the others and get confused sometimes who i am because there isn't that separation if they are mixed with me (blending). co-consciousness i think i've had a few times where i was behind one of the others and could see what was happening, so not blended with them like other times.

it can be confusing to figure out what is what and what might overlap with what.