Struggling to see project milestones in portfolio views

Hello

I have been struggling visualize milestones of projects in the portfolio gantt view.

  • In the project board level I set up a milestone, and I can see it in the in the project gantt view (see screen shots)
  • In the portfolio view, if I filter for milestones I cannot see anything

Provided that someone can help me crack where I am doing a mistake, how can I view both the main project time and the milestones in the gantt? The reason being that we have some projects that can be impact by a milestone from another project.

Maybe I am actually in the wrong direction and there is a better approach to this.

Thanks in advance!