Google’s "Double check response" feature provides a secondary verification layer for AI-generated content. By cross-referencing claims against live Google Search results, the tool highlights corroborated information in green and contradictory or unverified data in orange. This report examines the feature's mechanics, its role in addressing accuracy concerns following the 2025 Super Bowl ad correction, and how its post-response verification style differs from the inline citations found in competing AI assistants.