Defeating him was nearly impossible, and Kirito only did it because Heathcliff granted the exceptional swordsman some additional abilities to make it possible.

Source: https://www.cbr.com/sword-art-online-strongest-villains/

I don’t think she had an affair, but she might have been watching these guys in terms of prototypes for Heathcliff and Edgar.

Source: https://www.bostonherald.com/2023/02/23/emily-gives-voice-to-literary-giant-bronte/

Starring Timothy Dalton as Heathcliff and Anna Calder-Marshall as Cathy, 1970's is one of the better earlier adaptations of the book.

Source: https://screenrant.com/best-wuthering-heights-adaptations-imdb/