Left and centre: spectra of SNe 2019bkc (line), 2012hn (black dashed), and 2010et (grey dotted) centred in velocity space on the rest position of Ca II NIR (red), [Ca II] λ 7324 (green), and O Iλ 7772 (blue) respectively for +12.9 d (left) and +19.6 d (centre). A telluric feature is present in the O I feature at ∼11 000 km s⁻¹ and the peaks at −23 000 and −18 000 km s⁻¹ for SNe 2012hn and 2010et, respectively, are the [Ca II] features located to the blue of this O I feature. Right: Ca II NIR (top) and [Ca II] (bottom) lines plotted in sequence for the two epochs. The Ca II NIR triplet is consistent with no velocity evolution, while the [Ca II] line appears to decrease in velocity. Given the S/N of the spectrum this may not be real.