  We show that the K-groups K_{n}(O) for O the integers or an order in a CM
field and n>0 appear as direct summands of the homotopy groups of various
localisations of Zakharevich's K-theory space. After rationalisation and going
to the 1-connective cover, this even becomes a retract of spaces. As an
application, we provide the first construction of classes of infinite order in
the higher Zakharevich K-groups.
