On your benefit dashboard, there might show a message that the benefit has been delayed. When this happens it is because a project that links to this benefit has been delayed.
On the project dashboard, a delivery milestone has been linked to this benefit, which tells you that the start of the benefit is dependent on the finishing of the milestone. Therefore if the milestone ends later, the benefit will be delayed as well.
The delay of the benefit is applied to the measures as described in Why should I link benefits to project milestones?