Lower limit on the hadronic phase lifetime between chemical and kinetic freeze-out as a function of \dndch in p--Pb  and Pb--Pb collisions at \snn $=$ 5.02 TeV. The bars and bands represent the statistical and systematic uncertainties, respectively, propagated to the lifetime from the uncertainties associated with the measured \kst$/$K ratios in \pb (\ppb) and pp collisions at \snn $=$ 5.02 TeV.