Well, no. The questionnaire's URL is simply the Host Domain plus a folder of their choice. There are some possible modifications, but they're only necessary for specific settings: URL of the Questionnaire.
To check if there's a SoSci server behind the domain, it will probably be necessary to run a GET on the domain or rather domain.com/admin/index.php (if this folder is not access-restricted to certain IP adresses).
I assume, your goal is to make the researchers' life easier? The researchers will have to do a few modifications in their project, anyway. And we planned adding some features for that next year (e.g., a way to store the redirect URLs into the project more easily). If you like, stay in contact with us (email@example.com) and let's discuss what would help the users to create a seemless and effortless connection between panel and survey.