Display one comment list for all related post ?

Hello, I’m using one custom post type and one default post of wordpress. Some of my custom post type have post parent attribute connect to each of a default post through post parent ID. I have installed your plugin and it worked great, but it seem separate comment to each type of post.

Example : myDefaultPost include some parent customPost1,2,3,…, and the comment only display separate to each of my customPost and myDefaultPost ( if someone comment on customPost1 nobody can see that comment display on myDefaultPost or customPost2,3,4… ). So i would like to merge comment so everybody can see that comment in my “serial post”.

Thank you.