Yeah there are some researchers who think that autism spectrum and schizophrenia spectrum are part of the same continuous spectrum (people can have both and have some sub-traits cancel out)
This has some jargon but i wrote a version with more common words from my interpretation here:
This is from the original:
https://www.sciencedirect.com/science/article/abs/pii/S0920996419303305
On the other hand, Crespi and Badcock’s theory places SSD, especially those with positive symptoms (e.g., paranoia, unusual perceptual experience and magical ideation) and ASD at opposite ends of a single spectrum (Crespi and Badcock, 2008).
According to this perspective, social cognition and mentalization are underdeveloped in ASD (reduced empathy and mental-state modelling), but hyper-developed to dysfunction in SSD (over-attribution of intentions and paranoia) (Crespi and Badcock, 2008).
Further evidence for this diametrical model includes divergent patterns of brain development […] and opposite effects of the same genes implicated in both disorders (Crespi et al., 2009).
Moreover, children with comorbid ASD and SSD have been found to outperform both ASD and SSD groups in attentional set-shifting and social-pragmatic abilities, indicating attenuated impairment and compensatory effect (Abu-Akel et al., 2018).