You are correct. He and Johnny worked so well off each other. Even when Johnny was doing a bit and Ed was sitting on the sofa, just his laugh was hilarious. Especially when a joke bombed and there were crickets from the audience, you could hear Ed laugh.
I wonder why Ed didn’t do the usual shtick that he does with this bit by grabbing the book and saying that “EVERYTHING you want to know about first pictures is in that book.” And then Johnny would come up with some insult, such as “you are wrong El Segundo oil refinery breath.”
Bits like this were always great. Even funnier was when in the middle Johnny would start tossing out the ones he knew wouldn’t work or stop and look a one a long time, then snicker a little and still toss it