  Motivated by the recent experimental data of the values of the Heavy Quark
Expansion parameters, in particular the spin-orbit and Darwin terms, we argue
that nature actually may be close to a limit of QCD which has been suggested by
Uraltsev more than ten years ago. Assuming that this limit is not accidental,
we derive the relations among the Heavy Quark Expansion parameters that occur
up to the order 1/mb^5.
