He’s on the older range for this as most kids out grow them by them but again some have it into adulthood. But there would be also a tic like motion or head motion with it. My son had this when he was 9 but thankfully out grew it after 1.5 years medicated.
Once again processing issues come up with the description. We had to play 20 questions with our kid to get anything out of him. Social cues were different for him. Small groups of like minded kids they went nuts. Big groups, went mute.
This is the kid that when you order pizza he gets to do it. He also gets to go pick it up. Getting him to talk to anyone is positive. It’s like your resocializing him. Talk to his doctor /pediatrician. I would do a neurological workup. The absence seizure is something to look into.
Sorry, didn’t mean all this for you. Just adding to what you posted.