  In this contribution, the final measurements of the centrality dependence of
the nuclear modification factor ($R_{\rm AA}$) of non-prompt $\rm D^0$ in
Pb--Pb collisions at $\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV will be
presented. These measurements provide important constraints to the in-medium
mass dependent of energy loss and hadronisation of the beauty quark. The
$p_{\rm T}$-integrated non-prompt $\rm D^0$ $R_{\rm AA}$ will be presented for
the first time and will be compared to the prompt $\rm D^0$ one. This
comparison will shed light on possible different shadowing effects between
charm and beauty quarks. In addition, the first measurements of non-prompt $\rm
D_s$ production in central and semi-central Pb--Pb collisions at
$\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV will be discussed. The
non-prompt $\rm D_s$ measurements provide additional information on the
production and hadronisation of $\rm B_s$ mesons. Finally, the first
measurement of non-prompt D-mesons elliptic flow in Pb--Pb collisions at
$\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV will also be discussed. This
measurement can constrain the degree of thermalisation of beauty quarks in the
hot and dense QCD medium.
