coincidence?

I dropped by some stuff I forgot to send off with him to school this morning.

he was near me so I crouched on the floor held my arms out and said
"can Mommy have a hug?" His teacher said "bye Mommy" so he knew I
wasn't picking him up.

He hugged me, played with my hands for a bit, and I said "you can go
play now." and then he took off.

I've no idea if he was responding to my words, or if it was a
coincidence. but it'd be nice to think he'd been responding to my
words. I think he may have been, as he usually doesn't take off from
me like that. but he was in a large open area with plenty of room to
run around.