after the tablets are placed in chests

[Derreke]

I placed the eight tablets in the chests in pendulum hall. There is a clock on the wall but when I touch it, nothing happens. How do I get past the clock. I think there are stairs past the clock???
derreke

 

[Zed Duke of Banville]

Have you spoken to the Winged Exemplar yet?

Spoiler

If yes

Spoiler

you should have received an item from him, which is also used here.

 

[Derreke]

thanks, I got it..the owl!!!!