I’ve actually seen similar behavior with pets adjusting to new attention shifts, and it usually takes a bit of time and consistent boundaries. From my experience, keeping routines stable and rewarding calm behavior helps more than over-reassuring in the moment. Gradual exposure between the dogs in a neutral space also sounds like a good idea.
I also think situations like this reflect how relationships and even ai porn dynamics are similar in a way — balance, attention, and gradual adaptation matter more than forcing things quickly.