I will spawn another actor “Attacher”
When you spawn the first “Attached actor” you get a ref and make an event to send this ref to the “Attacher” actor
When you spawn other actor “Attached” you call an event on “Attacher actor” if it’s not eaqual to the first one then attach the Attached to the first attached actor.
Or in attacher get all actor of class attached actor, if Actor is different from the first one then attach to first attached.
Or in the spawner add tag when spawning and work with the “has tag” function.