When people are on phones talking loud in public I always think how unimportant they and their call must be.
I'm not important, but in my job I do talk internally and with customers about deals, sometimes larger multi-million dollar deals. From both a professionalism and negotiation/competition standpoint I don't want anyone hearing what I say except the people I am talking with.
If you and or the topic are really important, you should not be sharing it with the world.
In theory Superman was in the Justice League and that trumps most powers. But I would choose Justice League because the power I really want is Batman's, which is being super Rich.
Your assumptions are that the laws of physics as we know them with Light Speed as a limiting factor can not be altered. This may or may not hold true, but if we assume it as a fact your premise still is missing something.
Why did they have to receive our signal? We already are doing analysis of other stars and galaxies and identifying the "Goldilocks zone" for potential planets that we think would exist and would fall within what we define as the habitable zone. What if other races did the same who were farther away than those who could have received a radio signal? In this case they may have sent probes, ships or astronauts from farther away which we have been interacting with.
My inlaws have a full basement under the house. My FIL has a work room with great tools and a desk set up, desktop computer etc (It is where he always hid from crazy wife/MIL). He has a Lathe in the basement to give an idea of the type of tools.
However, most of the basement is row after row of industrial metal shelving that stacks 4 high all the way to the 10 foot ceiling. It is packed with boxes of records and other stuff. My MIL has also filled another bedroom or two with boxes etc. She told my wife that she hid money in different books and files. What is it? Well my MIL's uncle Sol had an accounting business in the early 1900's so it is all his records, and ......
By "hiding money" she means she put a $5 bill or $10 bill in something every so often. My guess is at least $200 scattered about. All of which any one of you can pull from the industrial dumpster we are going to drop everything into when she is gone.
My Dad retired early 2000 while living in DC suburbs. They were not from there and wanted to move, but they had a large house with a basement that was under the entire house footprint. Over 20 years they had just put stuff down there and it was fairly full and the idea of having to deal with that was daunting and stopping them from moving. Main living areas had nice stuff but was not cluttered.
My wife (and my Dad and I) loaded 10 SUV’s full of stuff to take to the dump, and gave away other stuff. This made my Dad feel like he could move, which they then did and moved back to Texas.
I got a buddy in the industry says he use to do something like that. Just put the bodies in town lake if he got backed up. He says he stopped that recently.