I draw the exact opposite conclusion from the same premise. Octopuses (cephalopods) are our direct relatives; we have physical contact with them; we easily obs

I draw the exact opposite conclusion from the same premise. Octopuses (cephalopods) are our direct relatives; we have physical contact with them; we easily observe to be intelligent; we know them to communicate with each other, and yet we can't meaningfully communicate with cephalopods. How do we have any hope of communicating with an extra-terrestrial intelligence?