Well, this could still be part of the May sweeps if they decide to take Easter Sunday off this year. Although I don’t know how that would fit with the schedule but let’s face it- ABC’s schedule has been all over the place this year.
Unless they do more than one 2 hour episode, then it would literally be impossible to take Easter off. Not to mention, they have to also air all of Time After Time (which I hear is 12 episodes) and American Crime (I heard 8 episodes this time). From March 5th to May 14th (the final Sunday before the Billboard Music Awards), they only have 11 weeks to air 12 episodes.