Why does Elvar command not devolve after an admiral is lost?

Why does command not automatically pass to the next senior Elvar captain when the group commander is killed?

Their doctrine assumes victory so completely that it contains no normal mechanism for defeat or the loss of the group commander.

Only the Elvar group commander may decide that a battle is lost, and command does not normally pass to another captain when that officer dies. Alex Clarke contrasts this with Royal Navy seniority, where the next eligible captain takes charge. Glynn Stewart explains that the gap is intentional in the worldbuilding: Elvar doctrine assumes victory so completely that it never developed a routine response to defeat or the loss of a commander. A fleet can expect to win and still need succession rules to remain functional after casualties.