lol.
So yeah - seems unlikely I know but the story goes that Daito ryu got its name from the castle Daito..... After much research it seems more plausible that it comes from the Zen founder known as "Daito" and his teacher who lived in China and was studying Buddhism. Well, "Daito's" teacher's teacher was well trained in Tai Chi (either Wudang or Chen my guess) and things were passed down IMO. Much of the highest levels of Daito and the whole concept of aiki seem remarkably similar to chan su jing exercises found historically only in Chen Tai Chi Chuan.
It's an idea I'd like to explore,
Jason Brinn
Don't want to rain on your parade but without the characters Japanese and Chinese this means nothing and I have a problem with any chinese word pronounced Daito but then yet another issue you are running smack into is dialect
Thank You in Mandarin = xièxie
Thank you in Cantonese = dòjeh
Note similar words with different tones have very different meaning; the mandarin word Ma, depending on tone can have 4 different meanings.
Mā =媽 = Mother - tone 1
Má = 麻 = hemp - tone 2
Mǎ = 馬 = horse - tone 3
MÃ = 罵 = scold - tone 4
There is no separate word for He or She in spoken Mandarin it is simply Ta but the characters are different. Also who was Diato's Sigung? Without that you have close to nothing
So without the characters it gets really hard to prove anything
And any similarity to Chen silk reeling means nothing it is likely that there was a Qigong exercise that was taken by the Chen family and used as their Chan Si Jin so at this point I do not think you have much of anything
Sorry but that is how I see it