How many times should a Jelly comment in a thread?

I am noticing increasingly that some Jellies will constantly interject comments in a thread to the point where it becomes all about them and not about the original post. This is not directed at only one person nor intended as an attack. It does detract from the flow of the Qs and As. I think it is valid for the poster to come back repeatedly with comments but other people are often grandstanding, derailing or otherwise interrupting the flow. I do realize there is room for some back and forth but not a total derailment. This is not asked to be confrontational but to improve the quality of the conversations around here. Your thoughts?