Hi,
This is not a dowloadable version DevTest 10.2.1, maybe 10.2.4 or 10.1.0, I assume.
If your first response has the HTTP status code as 302, then it is easy to write the meta-data for the first response like:
Then the response is redirected to the new URL.
However, if the HTTP status code for the first response is 200(you mentioned that the ack 200), then I do not have any samples which are suitable your requirement.
I am not sure your can realize the requirement.
But if you can modify the body of the first response in your VSE file, then please try to add the javascript to the first response body and to write the script to open the next URL.
If you use only out-of-box features in DevTest Service Virtualization, then I think you cannot realize this requirement.
Thank you,