[There isn't shock, but there IS realization on Ptou's face. The 'Oh' he mouths can't really be mistaken for the other shallow gasps for air... and the eyes that flutter open again to squint at Chrysos are sharp and clear.

His hands drop, sliding nervelessly to his side, even as he struggles to answer, a wheeze catching on the vocal cords.

...

He closes his eyes and nods instead, again, faintly.]