The official nomenclature used by the designers and Mercedes engineers for that part of the "hydro-pneumatic auxiliary suspension" is "spring struts" for which the 123 Body and Chassis FSM 32.3-501/3 F2 uneqvivically states "In addition to level control they are simultaneously serving as shock absorbers"

if this was not factual what other mechanism in that system is effecting the "damping" inhibitions that "shock absorbers" traditionally do? In other words on the 123 Chassis vehicles rear suspension what mitigates, corrects or counter balances the bouncy-ness of pure spring action?