Period spacing patterns for ℓ=1 g modes without rotation for the 16.9 M_⊙ 3D MHD merger product (blue solid lines, dot markers) and the 17.4 M_⊙ genuine single star (orange solid lines, cross markers) at different evolutionary stages. The horizontal solid black and dashed grey lines indicate the values of the asymptotic period spacing values Π_ℓ=1 for the merger product and genuine single star, respectively. The $n_{\mathrm{g}}^{\text{max}}$ values show the maximum radial order plotted for the merger product (blue) and genuine single star (red).