Left panel: Elliptic flow $v_2$ of non-prompt $\Dzero$ mesons (blue points) and average of prompt non-strange D mesons  (red points) as a function of $\pt$ in 30--50% Pb--Pb collisions at $\sqrtsNN=5.02 \TeV$. The symbols are positioned at the average $\pt$ of the reconstructed $\Dzero$ mesons. Statistical uncertainties are shown as vertical lines and systematic uncertainties as boxes. Right panel: non-prompt $\Dzero$-meson $v_2$ compared with model calculations .