He may have said that but it is not what I saw.
Well, Endo sensei uses words very thoughtfully. He is very carefull about what he says, because it is often connected to certain thoughts or texts with a daoist or buddhist background. And he is revising the texts - both: Japanese and English - of his videos.
As I said before: Even if colliding is the right word, feeling still is very soft and the experience of this "collision" is not hard or hurting in any way. So maybe it is this softness that you see.
When I am talking about clash or blending it is not about hard and soft or things like that. But it is only about technical aspects, about how a connection is made.