[33W]

My assumption is that Kanban has ongoing demos to the product owner as work is completed. In that case, the consolidated demos in Scrum may work better when you need to gather extended stakeholders (legal, compliance, design, etc).

[scarface74]

One of the steps in the Kanban process, before It goes to Production is UAT. If the UAT WIP Limit gets above a defined threshold it's time to do a demo and bug the people who have to do the final approval.