You can technically place image requests just about anywhere that
supports displaying images, as that's technically what an analytics
server call is. If it doesn't, you can also send data directly to
Analytics servers using an API call. This addresses about 99% of places
where you can access/modify code.I think your liveagent question is
better suited towards the SFDC community, but if you are able to load JS
files on the page, DTM would probably be the easiest way to accomplish
it. Have a rule ...