App Clip Smart App Banner not showing on iOS 14 release version

I've followed all the instructions on Apple's Documentation on getting App Clips setup.
https://developer.apple.com/documentation/app_clips/configuring_your_app_clip_s_launch_experience

But I can't seem to figure out how to get the Smart App Banner to show for an App Clip.

1. I've added the associated domains entitlement to my app and app clip.

2. I've updated my webserver to have the proper apple-app-site-association file.

3. I've updated my bundle IDs to enable Associated Domains.

4. I've added the meta tag: <meta name="apple-itunes-app" content="app-id=xxxxxxxxx, app-clip-bundle-id=com.company.testapp.appcliptestapp.app-clip"> to all web pages.

5. I've gone into Developer -> "Local Experience" settings to add my domain and bundle

I can:

• Go direct to the App Clip "App" by debugging

• When App (and not the App Clip) is installed, I can see Smart App Banner to open the app. However I do not see Smart App Banner when I delete the app and install the App Clip either through Xcode or TestFlight.

• Open App Clip via QR code reader.

Everything with App Clips seem to work fine EXCEPT the App Clip Safari App Banner showing on the website. This is all on iOS 14 and Xcode 12 release builds.

Are you guys able to get Smart App Banners to work for your App Clip on the latest iOS 14 release version?
What am I missing?

Thanks!
Alex.