Insofar as this new /p/ fills the space in the phoneme inventory which was lost by the disappearance of the equivalent stop in PIE, we may think of this as a chain shift.
Até que este novo /p/ encha o espazo no conxunto de fonemas que fora deixado baleiro pola desaparición do equivalente no PIE, nós podemos pensar nunha mudanza en cadea.