No mandate to solve or manage change. Problems work their up to CEO's desk. But top team gets overloaded with many operational and strategic decisions and meetings. Interdepartmental or project teams are formed. Routine work conducted through hierarchies, problems and projects to teams for investigation and action.
Teams often fail to take of because of bureaucratic structure.
They have dual loyalties. Real power, career progression with department heads. May be delay whilst consult and report back. If issues are controversial get pushed up the line again. More and more training for teams is not necessarily the answer.