How is the theme of working together illustrated in Chapter Nine of the novel, Blood on the River?

In Chapter Nine, Samuel fails to work together and doesn't give James the benefit of discussing the merits of his escape plan in event of Indian attack, and James dies tragically. Though it isn't really Samuel's fault and he shouldn't blame himself, he knows that if he and James were close, the younger boy might have been willing to listen to him about whether running for the ship instead of taking cover was a feasible plan.