Holacracy Community of Practice Archive, 2015-2019 Community Holacracy Web Site

+1 to what was said above. In addition, you may also interpret that the Lead Link should give a focus to each role filler, if without it there is confusion due to the domain authority.

In constitution 2.4.2:

A Lead Link may assign multiple people to the same Defined Role, as long as that won’t decrease the clarity of who should enact the Accountabilities and authorities of the Role in common situations.