Originally posted by daedalus
I wouldn't find it hard to believe that he wouldn't admit to taking instruction from a non-Japanese.
Possibly, although I think his son would have known about it if it had happened. More importantly, there is very little of a technical nature in Aikido that does not also exist in Daito-ryu, and I'm pretty sure that S. Takeda didn't make too many trips to China.
There's another discussion of this topic somewhere on the Aikido Journal site - basically, it seemed to conclude that there's no real hard evidence for a Chinese connection, and a lot against it.