Didn't read it, but that it's taken us ~4 billion years on this rock to git gud enough to send interstellar transmissions, it's probably taken other civs that

Didn't read it, but that it's taken us ~4 billion years on this rock to git gud enough to send interstellar transmissions, it's probably taken other civs that long (because we have no evidence to the contrary). Given that we're looking at systems thousands to millions and if "visible" literally billions of light years away, even if they beat us to interstellar radio, we're still getting messages from them which are hundreds, thousands, millions and billions of years old. So they might be there just like us, but the Pony Express can only run so fast.