Premise (Milenio, 2026-09-15): Live coverage titled “Cobertura EN VIVO del concierto de Grupo Intocable en el Zócalo de CDMX” reports Intocable on stage the night of Sept 15 at the Zócalo, listing multiple songs performed (e.g., 22:24 “Eso duele”, 22:33 “Tu Adiós No Mata”, 23:17 after the Grito “Enseñame a Olvidar”, later “¿Y todo para qué?”, “Coqueta”, “Sueña”) and noting they paused for the Grito and then resumed (“da paso al inicio de ‘El Grito de Independencia’… volvemos…”). Inference: This directly establishes that Intocable appeared and performed live songs during the Independence Day program at the Zócalo that night. Premise (El Financiero, 2026-09-15): States the Intocable concert that night is in the Plaza de la Constitución (the Zócalo) as part of the Grito festivities schedule. Inference: Confirms the venue is Plaza de la Constitución and that the concert is part of the public Grito program. Conclusion: Intocable did appear on stage at the Plaza de la Constitución on Sept 15, 2026 and performed at least one live song as part of the public Independence Day program.