I am now interested in shifted symplectic structures.

I found Zhang's results about symplectic structures (2011, p.3-4, arXiv link, Comm. Anal. Geom. 2017) and Pantev–Toen–Vaquié–Vezzosi's results on shifted symplectic structures (2011, see p.1-2, arXiv link, Publ. IHES 2013).

I thought were completely included in the results of Pantev–Toen–Vaquié–Vezzosi. Is this idea correct?

Any comment welcome! Thank you.