See The "Black Lightning" Series Join The Arrowverse And Learn 'Where Heroes Are Born' (Trailer)
Nice work done for San Diego Comic Con 2017 a while back. Sure they could have just delivered a trailer. By why not beef it up and give the people SO much more. Like an 'Arrowverse' lead-in (with all the DC TV heroes on The CW)... THEN hit 'em with the "Black Lightning" in there!