First you should be careful about trying actions on unrelated objects as I don't think that would work properly, whatever you pick on the left needs to be on the right. A way to do this is to have a Timer (behaviour) on the object, play the notice animation and start a timer of 3 seconds. Then you can have object on timer finished, set animation to walking. This would pick the correct instance of the object and you also wouldn't need a system wait.