Deliverable for QBR/EBR?

Curious what folks are sharing during the QBR/EBR?  Or any meeting which involves higher level stakeholders?  

Is it a PowerPoint?  If so, how many slides are you sharing and what are some examples of content? (let's assume you have 60 minutes)?

Is it a joint success plan?

Something different? Packet?

TLDR: What are you sharing to facilitate a productive conversation? 

For us, we try to create a PPT which aligns with the goals set forth by the customer, have them discuss their current business climate and then we share our product roadmap.  Typically 5-7 slides.  Nothing too heavy on the slides.

EDIT: Ironically stumbled into this article today, somewhat relevant: https://tomtunguz.com/written-board-meetings/