What about representational drift; are the observed structures of the learned sequences stable over space and time?
From "Discovery of Memory "Glue" Explains Lifelong Recall: KIBRA Protein, PKMzeta" (2024) https://news.ycombinator.com/item?id=41921715 :
> "Representational drift: Emerging theories for continual learning and experimental future directions" (2022) https://www.sciencedirect.com/science/article/pii/S095943882... :
>> Recent work has revealed that the neural activity patterns correlated with sensation, cognition, and action often are not stable and instead undergo large scale changes over days and weeks—a phenomenon called representational drift