This is a shared site for marketing purposes with other companies. I am not sure if any of the other organizations use Marketo or not yet, but if they do, I am sure they'd want to track things too. I know some will use Pardot. I'd imagine some will use Marketo too. Each company is independent of another so would have their own Marketo instance.
Understoood about performance. We'll deal with that part. I first want to know what's possible.
I just want to make sure that if we have multiple Munchkin.init() lines connecting to different Marketo instances, that the Marketo cookies can handle a single site with connections to multiple instances of Marketo with cross streams. From each Marketo instance perspective, it should be just another site. I think it'll all boil down to how Marketo does their cookies and whether they would allow for a single cookie to handle multiple Marketo instances or they could use a separate cookie for each.