Amusing speculation. However given the laws of physics no biological or functioning mechanical entity could reach them from us or us to them. However Earth has been transmitting huge amounts of analog data for the past century and huge amounts of digital data for the past thirty. wold not be far fetched in the next thirty years to receive transmissions from a distant civilization which in turn is linked with a chain of other distant civilizations. We however can never visit them nor they visit us.
The massive amounts of radar we put out for weather and navigation are actually the strongest frequency we put out not overwhelmed by the Sun and Jupiter, barring the digital satellite uplinks, but those satellite broadcasts to an alien would be like an ultra-small lighthouse beam that isn’t even every day for many venues (like football games).