When long-term inflation-linked swap (ILS) rates for the euro area peaked in summer 2023, some observers expressed concerns that ILS rates reflected not only inflation compensation, but also non-fundamental “technical” factors. Such factors potentially reduced the usefulness of ILS rates in terms of gauging inflation expectations and risks. This box contributes to that discussion using a novel econometric approach, suggesting that there is, on average, little scope for technical factors to affect ILS rates.