Emergent D8(1) spectrum and topological soliton excitation in CoNb2O6RemoveNing Xi (西宁), Xiao Wang (王骁), Yunjing Gao (高云静), Yunfeng Jiang (江云峰), Rong Yu (俞榕), and Jianda Wu (吴建达)Phys. Rev. B 112, L241104 (2025)