I had never heard of Taira Bunkai before. I learned about it on another thread. Seems similar to Hubud Lubud. Interesting to compare them.
Many fighting systems have some form of "sensitivity/flow" drills at the highest levels, especially those that have some connection to TCMA. Guju has its kakie, FMA has it's hubud, taiji has its tui shou, and of course there is Ving Tsun chi-sau. Actually, VT/WT/WC emphasizes this more than anybody. You can really see the chi-sau influence in the Inosanto/Lacosta blend hubud. After all, Dan Inosanto studied WC when he studied Jun Fan/JKD.
Some of the movement sequences in the second part of the hubud clip (starting at about .35) come right out of our basic dan chi training. Some major difference between hubud and chi-sau however is that hubud doesn't stick with constant forward energy ("springy energy") and there isn't an equal emphasis on centerline. In chi-sau, if your hand is free,
you hit. In the hubud, you tend to see more sequences where
both of the attacker's hands are on
one of the defenders, more attacks to the limbs, and you see more withdrawing movements. Considering that FMAs generally evolved from
weapons systems, this is quite logical.
Here are some WC/WT clips:
Interestingly, I'm told that Keith Kernspecht (guy in yellow in the first clip) once studied Goju and practiced kakie before taking up WT in the 70s.