Apple has added Watch Party which is great but restricted to its devices which is the only thing I could think of in “wild” scenarios.
Going forward a platform on AR hardware that enables video calling will be key (like FaceTime & Watch Party on AVPro), will enable people to spend more time together “face to face”, add in “games” to the mix and it would further increase this interaction.
Digital platforms will always be limited by the hardware capabilities.
If hardware is portable, imagine being on a live call in a concert, friends experiencing it together, phygital experience will prevail.