Determining which Apple Pay token is completing activation when issuer app is launched from Wallet

Hi, we are implementing ID&V and there is a requirement regarding the flow for Apple Pay. In order to clarify the case I will describe the use case scenario or steps to reproduce first:

1. add a card to the iPhone wallet app (yellow path verification required). Do not complete the ID&V process.
2. add a card to the Watch via the Wallet inside the iPhone Watch app (yellow path verification required). Same as before, do not complete the ID&V
3. complete ID&V process using the Issuer App either from iPhone or Watch.
4. the Issuer app receives the application:openURL:options: callback on its AppDelegate. In the options dictionary, we can not see the UIApplicationOpenURLOptionsSourceApplicationKey populated (it is nil).

At this moment, for the card we are adding there are now two tokens, both to be verified via ID&V process. One is on the iPhone and one is on the Apple Watch associated with the same iPhone.

The url received at step 4 contains the serial number which identifies the digitized card and matches with both the tokens in the iPhone and in the Apple Watch. We need something to detect programmatically if the digitization process started from the iPhone Wallet app or from the wallet inside the Watch app.

Could you please help us to identify how we could discriminate if the ID&V process has been started for the iPhone token or for the Apple Watch token?

Thanks