Universal links support for TestFlight apps

I have an app in TestFlight right now, and it's not ready to go public. I'm willing to add universal links to it, so I can invite my testers to test the app via a universal link which holds a few parameters.

The flow would be: Generate a universal link with specific invitation params -> User taps on the link -> if TestFlight is not installed it will go download TestFlight -> then will go to download the app from TestFlight -> Then will run the app and pass the params

I have tried to validate the do-ability of this, but couldn't find any helping articles about it.

This is very doable.

1. Within the apps menu of appstoreconnect, select your application that you want to share via TestFlight.
2. From the App page select the TestFlight menu option in the second menu.
3. You'll find the External Testing menu item in the left side menu and click the blue plus button to add a new group.
4. Submit a build of your application to that group for review by Apple
5. Upon app review approval you'll be able to generate a link from this same page that will allow anyone who accesses this link to join that group and test your application within test flight.

Edit: Not sure exactly what you mean by a universal link which holds a few parameters... so I hope this is still helpful