Thanks for solving a problem I was still strugling with TraderDaveUk. Idd it makes more sense to trade Dax in the morning and then switching to sp500 in the afternoon. Doing that solved a problem I was still having on a certain day in my backtesting.

I trade the DAX CFD in my UK morning session, then move to ES futures when the US markets awaken. At that point, they are certainly highly correlated.
I trade the DAX CFD in my UK morning session, then move to ES futures when the US markets awaken. At that point, they are certainly highly correlated.