@bangali above you have somehow set your holiday lights piston to a switch. If you don’t mind me asking how have you done that?
Also your holiday lights piston has its own turn on/off schedule. Now your using your outdoor room light scheudle to control the lights, instead of the holiday lights scheudle, again if you don’t mind how have you done that.
Until you mentioned yesterday or the day before that you had configured outdoors as an entity I wouldn’t have thought in that context and the next thing I was wondering was how to link in your holiday lights piston