This might mean otherwise? This is before talking of stat damages, says that have to register it within 3 months of notifying me they intend to get a copyright and persue it, and its been well over a year since they first notified me.
411
(c) In the case of a work consisting of sounds, images, or both, the first fixation
of which is made simultaneously with its transmission, the copyright owner may,
either before or after such fixation takes place, institute an action for infringement under section 501, fully subject to the remedies provided by sections 502
through 505 and section 510, if, in accordance with requirements that the Register
of Copyrights shall prescribe by regulation, the copyright owner—
(1) serves notice upon the infringer, not less than 48 hours before such fixation, identifying the work and the specific time and source of its first transmission, and declaring an intention to secure copyright in the work; and
(2) makes registration for the work, if required by subsection (a), within
three months after its first transmission