around maximum} \begin{split} &\mathbb{P}\bigg(\bigcup_{(s,t)\in \mathcal{D}} \{X_0(s)>u,X_0(t)>u)\}\bigg)\\ &\leq \sum_{(\mathbf{k},\mathbf{l})\in \mathcal{C}}\mathbb{P}\bigg(\max_{s\in \Delta^{(0)}_\mathbf{k}} X_0(s)>u, \max_{t\in \Delta^{(0)}_\mathbf{l} } X_0(t)>u\bigg)\