So with two hand tapping; let's say your right hand is playing something in 6/8 and your left is playing something in 4 over top? When the two patterns meet based on different tempos, wouldn't that be considered a polyrythm? Or am I way off. I have done two different patterns on my bass like that an I always thought that was called a polyrythm. I'm learning a lot from this post please continue. /popcorn.