How to communicate from Apple Watch Intent extension with the Phone?

I have a watch app which communicates with the iPhone app fine. But when running the WCSession from the Intent extension (used for Siri) I'm getting following in the console logs:

Error Domain=WCErrorDomain Code=7018 "Companion app is not installed."

Can the Watch Intent extension communicate with iPhone app - if so how can I enable it?

How to communicate from Apple Watch Intent extension with the Phone?
 
 
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