As someone who detests these chats opening up, you may want to consider preventing any embedded chats from opening on the landing page; require a minimum number of page visits on the site and/or clicks and/or time spent per page. The fastest way to get me off a website is to pop up a chat box, and I have the domains for most of those services in my hosts file. If you can enforce good standards on the use of your chat function, it'll make us cranky people like me happier.
The chat box should not be allowed to pop up anywhere in the page on its own--without user interaction with the chat itself, it should be limited to the borders of the window; without a certain amount of interaction with the page/site, it should be entirely invisible, whether it blends into the menus or stays off-screen.
If your widget is front and center on a user-hostile website, then they get linked together in my mind, even if it's just an embedded service.
The chat box should not be allowed to pop up anywhere in the page on its own--without user interaction with the chat itself, it should be limited to the borders of the window; without a certain amount of interaction with the page/site, it should be entirely invisible, whether it blends into the menus or stays off-screen.
If your widget is front and center on a user-hostile website, then they get linked together in my mind, even if it's just an embedded service.