Question: can an authority record (main heading 151) control a bib tag 710?

I asked this question on IRC and had a short but interesting discussion. My 
current understanding of how controlling & linking works in Evergreen was that 
an auth 151 would not control a bib 710.

In short, an auth 151 would control, for instance, a bib 651, and an auth tag 
110 would control, for instance, a bib tag 710. Similarily, a bib tag 651 would 
link to an auth tag 151, and likewise a bib tag 710 would link to an auth tag 
110.

What made me ask this question was due to a bib record that we had sent out to 
Backstage for processing. The bib record (Bib A) appears to be the only 
candidate capable of generating the authority record (Auth A). Snippets of both 
shown below:

Bib A:
=710 1\$aBarnstable County (Mass.)

Auth A:
=151 \\$aBarnstable County (Mass.)

What caught my attention was the bib tag was a 710, and the authorized heading 
matched and returned was a 151 tag.

Thanks!

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