Systems and methods are directed to synchronizing comments between a document and a virtual meeting. The document is shared in a screen-share section of a meeting user interface. A comment widget monitors for comments made to the document. In response to detecting a first comment made to the document, the comment widget synchronizes the first comment with a chat section of the meeting user interface. The comment widget also monitors for comments made in the chat section of the meeting user interface and detects that a second comment made in the chat section is linked to the first comment. In response, the comment widget synchronizes the second comment to the document by positioning a copy of the second comment relative to the first portion of the document and the first comment in the same context. The first and second comment create a first comment thread in the chat section.