HA showing 2 Nabu Casa Yellow v1.3 device / endpoints

Under ZHA Configuration I came across this “Deault Lightlink Group” setup and I it shows 2 entries, 2 endpoints. Although I haven’t done anything in this part of the setup I am wondering whether this is
a) correct and if not
b) whether I can or should clean up the setup and delete one of the 2 devices (and which one of the two)?