Can I access Movie Extras on Apple TV or Apple TV Apps?

While not available in the Apple TV app on third party devices, my AirPlay-enabled smart TV can receive AirPlay streams of this iTunes Extras bonus content from iPhone or iPad.

Use AirPlay to stream video or mirror the screen of your iPhone or iPad - Apple Support

List of AirPlay-enabled smart TVs and video accessories - Apple

iTunes Extras aren't available in the Apple TV app on smart TVs and streaming devices.

If you can't view your iTunes Extras - Apple Support