Regarding the special note in Chancel east room

[Mudbill]

I mix these rooms up a bit. The Chancel is the big cross? Or where you find Agrippa? I was thinking the area where you find Agrippa, by the entrance to the Choir. If you mean the bridge that collapses in the big cross shaped room, then I believe it only contains some story bits that aren't vital for progressing.