Trialogue

Trialogue or formal trialogue meeting is a term that is used as part of the institutional law of the European Union. Trialogue negotiations are provided in EU Treaties, if the Council does not agree to the amendments proposed by Parliament at the second reading. In this case, formal trialogue negotiations are carried out within the framework of a conciliation committee. A trialogue is understood as an equally composite tripartite meeting between those involved in the legislative process of the EU institutions - the European Commission, the Council of the European Union and the European Parliament. The European Commission takes over the mediating function.

Critics pointed out that the use of trialogues is detrimental for transparancy during the he law making process. That the EC uses this process to bypass public transparancy and resulting opposition.

...
Wikipedia