Was That Bob Roll On 'Childhood's End'?

I was working so not paying too much attention, but I coulda sworn that one of the bit parts was Bobke.  I stopped and looked and saw that it wasn't, but damn, that woulda made the whole show way cooler to put Mr. Roll in it.  Oh, well.  From the bits I saw, the second episode didn't work as well as the first one, but I will watch it complete when I get the chance in case I missed something decent.