Capture url parameters in Dynamic Chat

We are currently unable to capture url parameters when a user engages with a dialogue in Dynamic Chat. This is a big miss IMHO because it means we're unable to align dynamic chat engagement with campaign activities, or campaign costs. Many people user UTM parameters, and we currently use GCLID and CMPID as parameters to align user engagement to marketing activity, and marketing investment.

Capturing these parameters is critical to showing DC value.