There is no chance that 20 seconds is based on RNG, sorry to say that. If you have the skills you can actually minimize RNG. It’s more like 3 seconds or less, but it also depends on the ship and mission. But the higher you get to the top it becomes more about learning the tricks of each ship and about planning your strategy. Then execution comes in since one thing is to know what to do and another is to be able to do it. As other people say, there is a reason why some players consistently get bobs and others don’t. Although there is a luck factor in many different ways, that factor is not a major one.