Left: $p_{\rm T}$-differential elliptic flow of muons from heavy-flavour hadron decays in $2.5 < y < 4$, in Pb-Pb collisions at $\sqrt {s_{\rm NN}}$ = 2.76 TeV for the centrality class 20-40% compared to various transport model predictions:MC@sHQ + EPOS,TAMU and BAMPS. The TAMU model is shown with a theoretical uncertainty band Right: $p_{\rm T}$-differential $R_{\rm AA}$ of muons from heavy-flavour hadron decays for the centrality class 0-10% from [21] compared to the same models as for $v_2^{\mu \leftarrow {\rm HF}}$.