A streamer I watch did that mission. I forget if it was right before or after the boss fight; in fact I think it was right after it but before the final plotli

A streamer I watch did that mission. I forget if it was right before or after the boss fight; in fact I think it was right after it but before the final plotline decision. They were able to reload that and got better RNG the second time around. No idea what the actual odds of failure in it are.