We have a page that loads a bunch of 3rd party pixels in an iFrame. A member of the IT team complained that one of these pixels is taking a very long time to load, which it is. He said it is slowing down our website. The pixels all run in an iframe container, so this shouldn't impact the speed of the parent page at all, should it? I've been looking for documentation on the web to prove this but haven't found any yet. Am I correct and if so any URLs to supporting data would be appreciated.