It's 3 AM in the NBC Stamford (CT) studios, and there is work being done for the F1 broadcast. And someone (maybe all three) were seemingly asleep when watching the red lights. There was a delay, but they did not catch when the lights started coming on. Upon checking the video before breakfast, I did not know why. But I remembered the race started at 3 AM, and the broadcast was done there with sports car racer and Indy 500 only INDYCAR driver Townsend Bell trackside.
There is a reason why broadcasts should be done on site, not in a studio 10,000km or more far away!