Original Poster (OP) Conversation Summary
(works just as well with any member active in a Topic)
Click the avatar of the OP. Their Profile summary pops up. Click x Posts in Topic. (If they haven’t commented subsequent to their original post there will be nothing to click here):
General Tip: Right-click a link in the list and select “Open Link in New Tab” to keep the list format intact until you’ve finished reading.