Upload your monthly P6 critical path PDF
Use a text-based P6 export with numbered rows and Activity ID, Activity Name, Start and Finish columns. Include WBS Name, Package, Delivery Partner and either the P6 Gantt legend or a Critical column for the full breakdown.
Expand a stage to see its packages, then expand a package to see its activities on the same timeline. The summary PNG is a 16:9 PowerPoint image.