CsNiCl3 is the only spin-1 Heisenberg antiferromagnetic chain compound (Haldane chain) where sizable magnetic continuum scattering has been observed, absent in other intensely studied Haldane materials. We suspect that this enhanced continuum scattering is related to the strength of the multiply frustrated interchain interactions. Part of this frustration should be lifted as a function of temperature along with the decrease of one-dimensional correlations. In order to evidence the unusual temperature dependence of the effective interchain interaction in this compound, we propose to study the interchain dispersion as a function of temperature, along with the 1D bandwidth, in order to extract the interchain coupling strength as a function of temperature.