Identify Out-of-Plan Dependencies

As a plan owner, I would like to know about any stories within the scope of my plan which is marked as blocked by an issue outside of my plan because those blockers need to be resolved before my plan is accurate.

We have one project per team, and are further organized around either platform or application. Our application teams has milestones and releases and would like to use JIRA Portfolio to plan and manage them. However, many of their features are dependent on the development or fixing of underlying platform work, which would not appear on their plan.

It would be nice if Portfolio could do some scheduling or other logic around these "external" dependencies, but at the very least I need a report or list of the stories outside of my plan which are blocking stories within so that I can run them down, get timing, etc.