The nuclear modification factor $R_{\rm{pPb}}$ of electrons from heavy-flavour hadron decays in \pPb collisions at\sqrtsNN $= 8.16 \rm TeV$ (left) compared with that at \sqrtsNN $= 5.02 \rm TeV$ and theoretical models at \sqrtsNN $= 5.02 \rm TeV$ (right) .