What are the advantage of chain-linked prices over constant prices? Some variables in economics like GDP are computed in chain-linked prices or constant prices.

What are advantages of chain-linked prices vs constant prices?

Thank you
The advantage of chain linking is that component weightings drift away from their weight in nominal GDP as the reference period recedes.

This is a St. Louis Fed document on the methodology: link to website.

I am not familiar enough with the details to summarise it better than that document.