I know this cause I watched a whole documentary on stealth technology.
Well then it must be true.....
A flying wing design is not stealth based on it's design alone - it certainly has a smaller radar cross-section but it is not stealth. The Horten 229 was the German attempt to create an aircraft that was the most pure aerodynamicly. The Grail of a flying wing was something that Jack Northrop worked hard to achieve. He flew his version in 1940.
WWII era radar was really primative. One of the first successful "stealth" aircraft was the de Havilland Mosquito... why? It was made out of plywood - which was not a good relfecter of radar energy.
The B2 is stealthy mostly because of it's RAM (radar absorbing material) that covers it.
The Germans created a number of "weird" designs that popular culture likes to think that they were desparate to create somthing. The reality is, all nations with any sort of aircraft industry created "weird" designs in an effort to be the fastest, highest, etc. The Shinden was somewhat similar to the American XP-55 Ascender that flew in 1939. Both of them used the canard configuration and are still used today on Saab jet aircraft.