On your project page, include your survey link,
When they visit the survey from inside the app, the castId will be appended to the URL. Your survey can use this “prefill-key” to link the survey to the Paircast recording.
The screenshot below is of Paperform.The “castId” field is prepopulated with the query parameter “?castId=x”.
Then, follow the directions in the Zapier Tutorial to include the survey results in the dashboard.