It helps with stalling airstrikes. If you don't have a third one, you can just set the planes of the 3rd CV to match the airstrike timing of the other CV (around 21.5s to 22.0s).
@@Zettophi was ale to beat it but i had to manually stall from time to time since the airstrikes seems to move up closer to her skill procs. Thanks for the plane gears guide :3