I entered this link and didn't see the fold/collapse option
A passable implementation is here for this thread: https://zapddit.com/n/f4e3cccc43140e18dff0058d3a1bab3a8d4879d148d58d69707c7b6e67ef9c83
There is scope of improvement though
Discussion
Thanks for reaching out.
Are you able to see the starting note with some comments?
If so, the "comment' button at the bottom of each note expands and collapses the child comments
