DA is mainly designed for high end hardware AV systems that can support such configuration.
On the orher hand, the way that is being marketed and deliverer to public at large that does not count with the resources to acquire a high end system is this mounstrosity called Spatial Dolby Atmos, which is nothing but a simulation.
The technical specification of objects for dolby atmos is still the same, in fact there is a picture that Giles published long ago with the placement of the objects for revolver in true HD Dolby Atmos before "downmixing" it to Spatial for the masses