We don’t seem to have detected RF transmissions from these other worlds.
Of course if they have detected ours, most of what they will detect is ‘meat noises’, the sound of air as meat blows the air through holes, or images of the meat doing various things.
Some forms of life may just be too disgusting to contemplate, and a truly civilized people would not want to have a conversation with such a rude and crude form of life.
Do NOT dis my brother-in-law!