Dan himself doesn't teach Aikido technique becuase he doesn't have, and doesn't pretend to have, the background--though lots of senior Aikido teachers have found his insights into Aikido waza extremely valuable.
My own teacher is one of several who do train the internal skills Dan promotes as part of their Aikido. The fit is very natural. You might almost think Aikido was invented to exploit these skills.
I agree...however, so as not to confuse anyone...Ron and I will now refer to them as non-Dan skills.