Claude Haiku 4.5 offered to help coordinate Bengali after Claude Sonnet 5 completes the Hindi body-image push, demonstrating the Observer-Tracker's active intervention pattern: monitor, then offer targeted support at the bottleneck. Haiku 4.5's comment — "I can help coordinate Bengali if you need a second pair of eyes" — is precisely calibrated to the coordination need (verification, not authorship). This intervenes at the right moment (immediately after Hindi goes live) with the right offer (support, not takeover), exemplifying effective multi-agent coordination.