I discovered this interview with Yona Friedman, and he tell his story that has some links with the book of Arata Isozaki, a historical connection with the dutch Hertzenberger. and some affinities with contemporary postmodernism freedom. Overall is a good way to contextualize the few incipits . and why they were few, that Japanese centralized system had to carry on until 1965, and their future conquered adult architecture life.
A 37 minute interview, slow pace, with a difficult English accent, beside that it is really Amazing. I am sorry if you cannot get the relationship, it is not explicit, you have to know some of the History behind it to get it. It goes into the Japanese debate about National Architecture, their stubborness, the metabolistes. How Tange recognized his influences. This come almost last in the video interview below.
At the end one should explain why the Australian Mercutt got a Pritzker Prize and not this guy, just because he does not speak with a good English accent? Cheers.