Google introduced two new features called, Call Casting and Internet Sharing. These are part of Google’s new initiative for Cross-device services. This in itself is aimed at making the user experience much smoother when switching between Android devices.

Call Casting lets users move video calls across devices. Both devices need to be signed into the same Google Account. To cast a video call, simply tap on the Cast button. Currently, this feature is available only on Google Meet.

This is a feature of Internet Sharing, which automatically shares access to the Internet hotspot with other devices. That works with Chromebooks and Android devices, so long as Bluetooth and the device’s Location are turned on. It doesn’t work with Samsung devices.
To this very feature from Samsung, Google has an auto-hotspot capability. Internet Sharing does support devices running Android 11 and above; it needs Google Play services version 24.28.34 and, of course, will not be available on Android GO device variants that have cross-device services unavailable.
Both features are still in beta and will see a broader rollout soon.