That video was a simulation of what happened. It was actually overcast when that incident occurred.
But yes, it was WAY too close.
When I first saw it, I thought it was the real deal. These new-fangled simulation videos are fancy.I know it was a sim. I previously saw a video showing the radar tracks. Watching the altitude tags was enough to make you hair stand up. The visual of the sim however; made it much more visceral.