Type B web divided-power exchange relation conjecture

Let $\mathsf{X}_i^{(k)}$ denote the nonclassical divided-power web at position $i$ in $\mathbf{Web}(\mathfrak{so}_{2n+1})$, with $1\leq k\leq n$. Divided-power exchange relation conjecture. For $1\leq a,b,c\leq n$, there exist $\xi\in\mathbb{C}(q)$ and integers $1\leq a',b',c'\leq n$ such that

$$\mathsf{X}_i^{(a)}\mathsf{X}_{i\pm1}^{(b)}\mathsf{X}_i^{(c)}=\xi\,\mathsf{X}_{i\pm1}^{(a')}\mathsf{X}_i^{(b')}\mathsf{X}_{i\pm1}^{(c')}+\mathrm{LOT}_{a,b,c},$$

where $\mathrm{LOT}_{a,b,c}$ is a linear combination of terms of the forms $\mathsf{X}_i^{(k)}\mathsf{X}_{i\pm1}^{(\ell)}$ and $\mathsf{X}_{i\pm1}^{(\ell)}\mathsf{X}_i^{(k)}$. This conjectures further relations among nonclassical divided powers in type B webs, generalizing the cited iota-Serre relation; the coefficients and indices are not specified more precisely here, so deriving an explicit complete relation remains open.