High number of access to Chromecast device


The Top Permitted Domain on my Pihole are my Chromecast devices.
The first one has close to 25000 access in 24hrs.
All access comes from my MacOS machines. I never used the MacOS devices to Cast anything.
I find it really odd.
The query type is a A or AAAA to an address like 7d00efd3-35d2-2d00-78d2-eab5754473db.local which has a NXDOMAIN answer.

I don't understand what's happening. Any idea is welcome.