Both hyperspace assault and rapid launch bays state that the squadrons are placed aside " efore deploying fleets."
You might think that the squadrons you choose to place aside before deployment in your RLB count as part of the squadrons to be placed aside for the purposes of hyperspace assault.
However, considering that hyperspace assault specifies a number of squadrons (3), while RLBs allow you to set aside up to 4 or even 5, it stands to reason that the set aside for hyperspace is separate and distinct from RLBs.
This makes sense. After all, one is an objective card, while the other is an upgrade card.
Thoughts?