The controls mentioned in article L. 6316-3 may be shared between the funders mentioned in article L. 6316-1. These funders shall report to the Minister responsible for vocational training any useful and substantiated information relating to the quality of vocational training courses. When the observations made are likely to call into question a certification issued pursuant to article L. 6316-1, the Minister responsible for vocational training shall inform the body or authority that issued it.