The rapidity dependence of $P_{\rm z,s2}$ averaged for $\Lambda$ and $\overline\Lambda$ in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} =$ 5.02 TeV in semi-central collisions. The model calculations [38] for $\Lambda$ and strange quark for Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} =$ 5.02 in the 30$-$50% centrality interval using the approach described in Ref. [23] are shown by dash-dotted lines.