Loop when list item updated

Hello Nintex Community,

I'm looking for some help with my workflow. I'm building an approval workflow and have created a second list to keep discussions related to the request. Inside the approval workflow, I've created a parallel block, with one branch for the actual approval state machine. For the other branch, I would like a loop which waits for changes to be made in the list item for the request discussion, and when changes are detected will send an email alert notifying all parties an addition to the discussion.

I'm trying to use Loop with Condition, but can't figure out the best way for the loop to run when changes are made. If anyone has any ideas or creative solutions to this, that would be helpful. If you have any questions or need any additional information let me know.

Thanks,

Sean Dezarn