Cumulative flow diagram for multiple Scum teams

[Vasanth Krishnan]

Hello All, 

Is there a way to use the Cumulative Flow Diagram for multiple Scrum teams? 

We have multiple Scrum teams working on a single product, and we want to gain an overall view of how the work is flowing for these Scrum teams. 
Can a Cumulative flow diagram help here? If not, is there any other way? 

Any pointers on this will be of great help. 

Thank you, 

Vaz