Welp, seems that only the people in the Climax Hour get to respond to Rodias' address... Which is like, 2 out of 6 Chapter Keepers and some of the residential NPCs. :P

Salem, Graft, Light, Talim, Violet, Flan, Aurora, Tabula, Papillary and the Miko, as well as grunt/fodder NPCs were able to hear the proposal.

Chuunitrixx, Ashara, Gromgard, Lord Chompy Bits, Kath, Charme, Mamoru, Isolde, Bone Daddy, Zouyu and Kaldorna were all left in the dark.

Gee, thanks Baron, you selfish prick! xD
Charme gonna bite Graft's head off when she gets back... And spank Salem.