And while there are other aspects involved, a big part of the reasoning is Sonequa Martin-Green, who was hired for the high-profile and mystery-cloaked lead role, will soon be seen back on The Walking Dead when Season 7 returns in February.
Some execs were worried that it would cause confusion among consumers if a new Martin-Green series went into a heavy promotional campaign when she could still be seen on another show.
Big casting news came out today for Star Trek: Discovery, but for everyone waiting since late 2015 for this show to come together, the bigger TCA announcement (via EW) was that the sci-fi adventures will not make its May premiere on CBS All Access as planned.