I don't think this is at all as serious as you think. I don't think this is the Zurich Office for Urban Development spinning a cute little narrative, I think it

I don't think this is at all as serious as you think. I don't think this is the Zurich Office for Urban Development spinning a cute little narrative, I think it's more similar to the Corded Ware culture [0], where scientists identified a lot of clayware buried in corresponding times and places, and so theorized that the people that make them communicated and shared a culture. The timing, and the coordination, suggested that those people corresponded to the Indo-European spread from near the Black Sea into western Europe. In taking two things (two pieces of clayware, or two people) uncovered with similar features, you are usually able to extrapolate more information than by holding each one in perfect isolation. What's more, there's not a whole lot riding on this. The office said "Isn't this interesting, that two archaeological sites are so close in place and time". That usually doesn't happen, particularly that far back in time. If the Office had editorialized that they were lovers, or best friends, I would agree with you, but this is just saying "We can date them to a very similar time, and to a very similar place. They are intrinsically linked, and should be treated as being more close together than separate." https://en.wikipedia.org/wiki/Corded_Ware_culture https://en.wikipedia.org/wiki/Corded_Ware_culture