Chrissy is asking him questions, and by God, Ryan is answering them.
How do you get to New York City? On the train!
How do you get to Florida? On an airplane!
What do you use to call Grandma? A telephone!
What picks up the garbage? A truck!
What do you need to turn on when it's too dark? The lamp!
What do you need to turn on when it's too hot? A fan!
Meanwhile, they're playing a sorting game that involves grouping little toys in various ways. Chrissy is finding challenging ways for them to clean up, like "Give me two things that live in the sea and two animals that live on a farm," and Ryan is keeping up with her perfectly.
Then Chrissy says, "Give me the crab, the horse, the truck, and the bread."
Ryan pauses, then asks her, "What was the first one?"
I'm in tears I'm so happy. When the pieces come together, the picture is indescribably beautiful.