This additional layer of overhead

It's about Scrum which is a set of practices used in agile project management that emphasize daily communication and the flexible reassessment of plans that are carried out in short, iterative phases of work.

Any direction to understand "layer of overhead" in this context?

As a Foe:
On the off chance that the PO does not compose great stories and the Scrum Master does not get this in time, the group should begin posing a ton of inquiries and perhaps set up special gatherings during the run, causing less social individuals stress. This additional layer of overhead is when all is said and done but not helpful for individuals with Asperger who prefers things that are set and pursues guidelines and guidelines, and next to no cooperation with "others" are required.