Instead of using deep link, I have found out that I can use a custom Request Handler. That has helped me obtain what I needed.
Do you have access to the latest HTTP response in your Microflow? If you do, you can retrieve HTTP headers by association. They will contain the info you need.
were you able to find a solution? I need the same thing.
EDIT : found it, my deeplink was not well set, I had to refresh the list of microflow, in that way, the conifguration deeplink proposed me to include get parameter, and i receive what i want with that .