Somewhere along the way those radio transmissions have scattered to the point of not being able to noticed I am sure.And if the receivers are like incredibly gossamer-thin spider-webs stretching over thousands of light-years, operating by a civilization 100,000 years old?
I bet they're watching the first episodes of Howdy Doody right about now.
How long will it take for them to discern that Howdy Doody is a puppet and not a master race or something?