To what extent would teaching method be of influence, and culture?
Teachers in aikido don't get what their own founder was saying. It's not their fault, apparently it just isn't taught anymore, hence Ikeda going to Karate and Daito ryu to get it, others going elsewhere.
Ikeda was taught by Tada; not just anybody. Still he needed to look elsewhere...
Would that be because the teachings of Tada were not understood by Ikeda or this subject was not taught explicitly? And, did Ueshiba 'teach' this? From what I understand he showed, dared to see, but never taught it. Or is this just about semantics?