I think we went to that together - is that the time the firearms set off the sprinkler system.
Also not sure who demonstrated but the similarity between that and the Koryu Dai-san of Shodokan Aikido was striking.
Nothing much to add, but I remember going to a budo expo in Himeji and seeing Daito Ryu was on the list of demonstrations. I was really excited to see the mother art of Aikido. I was a little surprised at how it looked (to my very low-level eye) just like Aikido. I don't recall who was demonstrating, unfortunately.