VR's tradeoff is a headset where you're hiding your real face; video chats like Zoom let you see someone eye to eye, sort of, but you may feel glued to your laptop screen.Project Starline is a two-way video chat, but what stunned me was how it also felt, to some degree, like something AR, or holographic.Google didn't allow photos or videos of my experience, but it's a tall-backed bench facing a big screen, with a counter-like wooden bar/desk forming a bit of a low wall between the two.But you and I can almost feel you'd reach past that point in the wall and give each other high fives," Nartker explains.I didn't realize until later that the wall behind my holographic chat partner isn't real: it's a virtual backdrop that seemed indistinguishable from the wall behind me, with virtual shadows added."