Look at where the flowering trails run. They start on the openwork panel, cross onto the beaded ring of the oval, and in places pass over the joint where the two frames meet. That crossing is the whole problem of this design.
A trail carved in one piece across that junction would sit exactly on a glue line, and a glue line is the one place in any frame that will eventually show movement. So our artisans carve the trails as separate sprigs - short lengths of stem, leaf and flower - and fit them only after both frames are assembled and squared. Each sprig is then let into the surface it lands on, and the sprigs are arranged so that the visual line of the trail is continuous while the physical timber is not.
Follow a stem with your eye and it flows unbroken. Put a fingernail on it and you would find the breaks. That is the intended result: a decoration that reads as one growing thing while every piece of it is free to move on its own.