Exercises should cover the alert stage and the different recovery stages: detection and alerting, activation and escalation, initial response and containment, recovery of services in dependency order, operation at the minimum business continuity objective with work-arounds, and return to normal, because each stage has its own decisions, procedures and failure modes and a full recovery is only as good as its weakest stage.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.