Is Sikhi a combination of Hinduism & Islam?

My religious studies teacher recently told our class that ‘Sikhism’ is an amalgamation of the larger, more dominant religions of India and when I corrected her, she showed me an article on our student portal, which states:

“Roots of the movement he founded were primarily in the Hindu cult of devotion to Vishnu, though the practices of the Muslim mystics called Sufis may have had some influence.”

https://kids.britannica.com/students/article/Sikhism/277061