Regarding... Ancient Relics, since there really was no known way to refer to that ancient device, Taville temporarily named it Ancient Relic, and its research unsurprisingly hit a dead end.
As we had already concluded, the Ancient Relic snatched from the hands of the Angel Army was something disassembled from a much larger device. In its original assembly, its function was likely nothing more than a signal processor or a connecting piece. Just relying on the part we obtained to infer its former function...
Picture the difficulty of reconstructing an F-17 from a single screw.