you would need to set up in the tick even a boolean to act as a “gate”, so that the begin overlap, will enable the gate/boolean, and continue to check the trigger box, and check to see if the encompassing “box” of the actor is fully enclosed by the other box. Then you can also use End overlap, to disarm the boolean/gate so that all the checking stops, when the actor is totally outside the box. There are other things you can do of course, to reduce the overhead, but that is the general idea you will need.