I need to review the code for an entire branch on GitHub. I went to the page and click compare . There is a tab, the files are changed, which shows what I need, the difference between the two branches, the wizard and the selected one. The problem is that it does not allow you to comment on the code, like single diff does :

The blue bubble just does not appear on the branch difference page.
Does anyone know how to review the code of an entire branch in GitHub?
Thanks.
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