In 6sense, an ad click counts as web activity.
You may see an ad click but no web activity associated with it. There are a few reasons why an ad click may not count towards web activity.
Between a click and a pageview there can be 1-5 seconds depending on the type of device or internet bandwidth. The click-to-pageview may not get recorded for any of the following reasons:
Extensions block the page from loading after the click.
User abandons the page before the pageload events fire.
User has JavaScript disabled on their pages.
User has extensions on their browser that blocks 6sense JavaScript from loading.