hm, yes i can, but doing this online will be a bitch. (Replay theater has a frame by frame option)
I'm not so sure about that speed thing ryko. Obviously the 66 is a bit slower input, but on a TK you have to wait for the jump. (214B is the best example of that, if you input B too early you get the ground version even if you hit 2147B)
Never mind I'm being stupid theres probably more than a 4 frame difference between inputing 663214 and 2147. That said, I was pretty proud of myself when I landed a dash canceled 214C in a online match today.