Has the correlation between the stock market and crude oil changed since the COVID-19 outbreak?

Has a predictive relationship changed? 

There has historically been various correlations and predictive relationships between crude oil and stock. For example, since crude oil is an input into most products, an increase in crude oil prices has tended to increase prices, lower quantity sold, and therefore lower future stock prices.

Survey the literature on the relationship between natural gas and crude oil prices.

Survey accounting of oil reserves (explaining various definitions of 'proven').