Mostly, when weekends, the price plummets and that's what you'll get to analyze.
In crypto, I don't think that there's a relation between the weekdays and weekends of crypto and stocks. But we've seen the connection of drops and pumps from stocks to crypto.
The market itself has connections for sometimes but not entirely including the days when traders are trading.
if we want to know the correlation between crypto and stock market wes should learn about intermarket analisys, it will really complicated for us but usefull for feature trade. At weekend which is other market closed and many institution also closed, it used by whales to shaking market by spreading FUD .