It is common for one or more WebEx, Cisco Spark or FaceTime video conference calls to be used during a Design Review.
To perform a design review we typically need a Bill of Material (BOM), schematic, PCB information and sometimes data on specific components. We do not need to understand a lot about how the device works. We do need to know the frequencies and edge rate of repetitive signals.
Each design review is as different as people are different. Please contact us to chat about your situation so appropriate actions can be taken.