Can a PDF contain multiple highlights/shapes, all pointing to the same comment? (Images included)

[Prasanth29479621n87n]

Note: Images included towards the end

I have an XFDF file (xml) that open on tops of a particular PDF and highlights some content on the PDF (basically draws a rectangle shape) as per the metadata given in the XFDF. Now each of these highlights / shapes have their own comment in the comments section (by default). 

Is there a way to create highlights/shapes without any comment in the comments section.

or

Is there a way to make multiple highlights/shapes point to one single comment.

Example below:
Actual Output

Expected Output: 

Please share if this is feasible.

[try67]

- Only if you flatten them.

- No.

[Prasanth29479621n87n]

Could you tell what you meant flattening them?

[try67]

It means converting them into static contents. You can do it using this script, for example:

this.flattenPages();

Note this will affect all the comments, fields and links in the file, though!