That's really impressive, ElizabethN! Off-topic, but have you competed in dance too?
That's a helpful diagnostic trick. There was zero delay in his answer when he was chatting to me, so I have to assume his comprehension is immediate. He literally broke his sentence, answered my question, then kept going on his original train of thought as if no interruption had occurred.
Next step: DH and I simultaneously ask questions while he chats!
My mum was the first person to notice him doing this when he was a very young baby. At times, he'd be engaged with a toy and talking--often while wiggling around-- while I read to him. Others, he'd be rapt and laser focused on the book. One time when he was particularly multitasking I said, "What the heck am I doing? This is silly! I'm pushing this on him." She said, "No, he's listening. He loves it! Stop and you'll see." Sure enough, I stopped and he balked.
