The losses that the Phoenixes incurred made it impossible for them to break through the blockade of robots in the sky in a short amount of time.
They were able to manage one or two infiltrations before but the causality that the lightning storm inflicted on them set their manpower back and also caused them to be almost pushed out of the plane.
Legion-5 chose to stand by and watch the fight. It was an interesting fight so he wasn't bored. It was literally raining fire and metal. In his opinion, nothing could be more interesting than that. It is especially interesting to watch since his life is not in danger.
Without danger, he could watch and appreciate the fight. He noticed that the robots could heal. They could fuse with shattered metal fragments of their dead metallic comrades to heal their injuries.
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