Dynamical dark energy and the week that broke cosmology

> A recent analysis by the Dark Energy Survey Supernova Program also finds a preference for evolving dark energy, in the same direction as DESI DR2, but with a slightly lower statistical significance (bringing the combined significance down from 4.2 sigma to only 3.2).

Is this right? It would seem that adding another finding "in the same direction" should always increase the statistical significance, even if only slightly if the new evidence is week.

Under what circumstances could additional evidence for X reduce the estimated likelihood of X?

to be fair, cosmology has been broken every several months lately (Hubble Tension, etc.)

I mean that's how science works, discover something new, rewrite knowledge

not like religion where you make stuff up before you know anything about anything and then force everything new to adapt to the legacy of decisions thousands of years prior