Honestly, my mind could never wrap around genealogy and family relations well at all. I thought they were indirect cousin/uncle , or as you say, cousins once removed.

Also my understanding of many Asian cultures is they tend to have a much more tight-knit large family structure. And doubling that is the fact they're 2 heads of world-level hardware tech companies.

And, well, there's no such thing as coincidences. Having all of this line up, and for "some reason" AMD keeps missing when they could have owned a big chunk of the market has a certain family oligopoly smell to me.