New intel awaits you on the Evidence Board:

"Paracausal energy signatures detected in Evidence A (aka Osmic Fragment) share indeterminate link with temporal 'patterns' consumed by Artifact X (aka the Relic). So far, Evidence A elicits no response from Artifact X, but more investigation is needed."

In other words, the Darkness energy infused in the Osmic Fragments from Fynch is compatible with the Relic. Those energy readings are strikingly similar to the Weapon Patterns used to operate the Relic. The Hidden think the fragments are essentially weak, incomplete Weapon Patterns, but they need more data to be certain.

Shape more weapons using the Relic to confirm this connection. By analyzing complete Patterns, you might be able to determine whether the Osmic Fragments are truly compatible with the Relic.