The six-times-linear wheel Ramsey conjecture

Let $W_{2n}$ be the wheel on $2n+1$ vertices, and let $R(W_{2n})=R(W_{2n},W_{2n})$ denote the diagonal Ramsey number for two copies of this wheel. Six-times-linear wheel conjecture.

$$R(W_{2n})\leq (6+o(1))n.$$

Improving the paper’s trivial bound through cycle–wheel Ramsey numbers would sharpen the understanding of diagonal wheel Ramsey numbers; the supplied text gives no resolution.