This was Hye's plan from the start. If he arranged a big fleet from the beginning, the coordinated force would drop any idea of pressing the attack and would retreat and let him do the heavy work.
But as the fleet he sent after them wasn't that big, they kept attacking without fearing or depending on him. And when they attacked the inner and tight layer of defence, Hye used the chance to make his new grand fleet while waiting for the Toranks formation to get disarrayed.
He noticed during the past incidents that coordinated fleets made it inside, the Toranks would send lots of their ships to hunt them down. This would create a hole in their tight formation, not precisely a hole, but a weak spot he'd target.
"Hit that spot now!" When the same happened, he moved his stationed fleet towards that weak spot, "they wanted to squeeze my fleet in between the outer and inner layers, useless move!"