https://www.youtube.com/watch?v=EhH3Boy9OfESo I watched HoloX's reaction to Marine, they were extremely surprised not to hear Ahoy or Unison at first. They thought because earlier in the show during the talk segment with Fubuki after Happiness World Marine said that her solo song wouldn't be "that", so it seems like their expectations swapped from Ahoy to Unison. So then they were bewildered when the song started, they had no idea what was going on.
Chloe said it seemed like it was one she didn't know, then everyone slowly realised that this was a new song unveiling. Pretty interesting to see them gradually work out what they were watching. They wondered as to who the composer was, and noticed the ??? in the credits at the end as well, and mentioned they had a guess as to who it was but that clearly there were plans in the future to annnounce/unveil it again.
They really enjoyed it in the end too, in particular they seemed to think it was very cinematic, like they had just watched 3 hours of "Houshou Marine: the Movie" and this was the finale or something. The piratey evocation of the song really seemed to hit hard.
