Jon Mandrola, a respected electrophysiologist, isn’t a Watcman fan. I’m not sure this link will take you to his opinion on it. If not, search for Mandrola Watchman in a search engine. https://johnmandrola.substack.com/p/the-case-against-watchman-for-stroke

You can look up "The Watchman Procedure" on the Watchman website.
They call it a procedure throughout the site even in the URL https://www.watchman.com/en-us-hcp/about-the-procedure.html The watchman doesn't do anything to control or help reduce Afib. The purpose of the watchman is to prevent or catch clots from moving through heart/lungs and brain. Whereas Ablations and some drugs are used to control and or stop/reduce Afib.