I wonder if the GIB was the handling pilot, given the TV program was to follow a student pilot learning to fly a small jet trainer, with a highly experienced ex Roulette pilot the other person in that aircraft doing complex formation flying for filming purpose.
Both crew in Viper 1 were highly experienced ex Roulettes pilots.
KRaviator, if you consider that Viper 1 was inverted, with Viper 2 below, mostly behind, and crossing sides, it would be difficult to constantly monitor them. And even if you could, I doubt you’d have been able to avert this particular collision.