Structurally they are similar enough that we can communicate. The discovery would be altering our science, but every attempt to exchange beyond technicalities and niceties is somehow incredibly boring to both sides.
After the initial awe, it would be like, yeah, we know aliens.
Bold accusation.
Sure it would be mind-blowing, but society-wide awe about other(ed) societies on this planet has largely waned off and many people do not care about the lives of people deemed other.
I hear you, I don’t mean to accuse or project anything on you. It is a valid question. But boredom by its very definition is something to do about our internal state and feelings, and not about the external object (or sentient race) in question. To some extent, we decide whether or not to be bored with something. A rock outside my house appears boring, but that is my lack of creativity. Maybe it is useful as a firepit stone, maybe I can split it open and there is a fossil inside, maybe I can study it and find out what type it is, maybe I can gather enough a make a pulley system to the roof. But boredom is a decision.