Fixed income query

Callable bonds have lower one sided down duration while put able bonds have higher one sided up duration. How would the duration for callable and straight bonds be under a declining interest rate scenario?

As rates decline bond values go up:

callable bonds get called as issuers can issue as lower rates, so duration is short (large cash flow from principal is suddenly brought forward to present)

putable bonds don’t get put by bondholders so the principal remains outstanding until maturity and duration is long