for me (from observing my #ActuallyAutistic #AuDHD self and my various ND friends and family)
* low awareness/control/respect of nonverbal social/emotional/timing signals (incoming and outgoing)
* emphasis on rational/logical explanations for events and behaviors over emotional/social explanations
* avoid eye contact, retreat from social encounters during stress
* high empathy, concerned about fairness and diversity vs arbitrary rules esp. around social hierarchy and manners
* difficulty telling lies or going along with unfair/imperfect directions
* inclined to follow rules (as long as they're fair and clear), difficulty recognizing sarcasm
* sensory sensitivity (sometimes / specific stimuli)
Both have:
* impulsiveness, distraction, low boredom tolerance
* hyperfocus
* sensory processing delay (sometimes)
* creativity and lateral thinking
* comorbid anxiety and depression and sleep problems
The relatively new term #Monotropism is probably a real thing and embraces both.