login to an external provider (different domain) and redirecting back to my app

[balpreetchahal]

Steps:
1- i m logged in to my web app with cypress.
2- need to add a data-source by clicking a button in my app
3- button click makes me navigate to another 3rd party app(different domain)
4- and after successful login to 3rd party app, it gets added to my web app
5- final redirection back to my app

I cannot really do anything after step 3. The new domain covers my test runner browser window completely and cypress is no longer visible.
Is this scenario even possible using cypress? Please guide.