“With SharePlay in the FaceTime app (iOS 15.1 or later), you can stream TV shows, movies, and music in sync with friends and family while on a FaceTime call together.” – Apple Support
In the same update, the Hulu app added the ability to flip between channels on Live TV during playback.
So far, we have not seen the SharePlay option for Android TVs and devices.
I hope there will be a way to share movies on whatsapp or whatsapp should launch a hub to get those from there.