.... less paired sword practice than aikido taijutsu with a little something extra that made a number of openings much more apparent when done mindfully.
Hello Fred, I wonder if this type of practice is what you're referring to:
Takeda Sensei is a student of the late Yamaguchi Sensei.
In an attempt to place this clip in context, this is five minutes of one keiko. In this case, the shoto is being used to explore and experiment with connection, extension, intention.
(Clearly it is not, nor is it meant to be some kind of blade fighting or defense. It may look weird to watch, but is interesting and fun to feel and practice.)