RBXScriptSignal:ConnectParallel
Establishes a function to be called when the event fires. Returns an RBXScriptConnection object associated with the connection. When the event fires, the signal callback is executed in a desynchronized state. Using ConnectParallel is similar to, but more efficient than, using Connect followed by a call to task.desynchronize() in the signal handler.
Note: Scripts that connect in parallel must be rooted under an Actor.