Element scroll down selector with unique container selector

Currently when using the Element scroll down selector you can only have child selectors inside the element on the page.

It be helpful to have an additional selector which sets the parent selector for all child selectors. Similar to how Element click selector works, giving an option to what the "selector" is " CSS selector for the wrapper elements that will be used as parent elements for child selectors." This grants users the ability to load additional elements on a page but continue to interact with more top level elements such as popups after clicking into a scrolled element.

Example Page:
html > body > div.container > li > ui.feed
html > body > div.selected-content
Where ui.feed is our scroll element, we continue to load as we scroll down. but no child selector can access div.selected-content after clicking on ui.feed (Element Click)