Are supported Apple Watch models able to access SiriAI when connected to an older iPhone?

Let's take an example where a user is on an iPhone 12 running iOS 27. They have an Apple Watch Series 10 paired running WatchOS 27.

Are they able to access SiriAI queries from the Apple Watch?

If not is there a technical limitation on why this isn't possible?

On Apple Watch models where SiriAI is fully supported, does it still have any on device capability or is it all now requiring Internet access? And can this be Internet over cellular without the paired iPhone nearby?

Are supported Apple Watch models able to access SiriAI when connected to an older iPhone?
 
 
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