It links a millisecond pulsar with many of the properties of an X-ray binary, to J1808, an X-ray binary that behaves in many ways like a millisecond pulsar, thus providing a strong chain of evidence to support the theory.

• 然而直到目前，决定性的证据还未获得，因为介于第一和第二步之间的过渡天体还几乎不为人所知。