I am happy you guys have enjoyed the clip. I sure have!
The comments about Kisaburo and Hayato having similar movement are interesting. I actually think they moved quite differently. I was very surprised when I moved to Tokyo and saw Osawa Hayato's movement and how different it is from his father's.
I have a video of when both Osawas visited Akira Tohei's dojo for some anniversary. Hayato has about the most beautiful ukemi I have ever seen.
Here is a clip of Osawa Hayato Shihan
One thing I do see in common is their footwork. If I am remembering correctly, Akira Tohei described it as "suriashi" derived from the Noh drama.