Liquid HCl has attracted numerous studies focusing onto the role played by hydrogen bonding on the dynamical properties of this weakly associated liquid. Previous computational works have shown that the collective dynamics in HCl bear closer resemblance to those exhibited by a monatomic liquid (e.g., to its nearly isobaric cousin Argon) than to those found for its closer analogue HF. The origin of such striking differences is not yet understood. As most experimental work on condensed HCl has been carried out using neutron diffraction and optical spectroscopies, detailed comparison with relaxation and transport data has not been possible to date. Here we aim to bridge the present gap between theory and experiment on HCl by performing incoherent and coherent inelastic neutron scattering experiments across its entire liquid range.