And this is the ER2 and ES chart in the morning. ER2 always trades above ES on 1 minute chart when the day is bullish, when both get a kiss, buy ER2. When the day is bearish, ER2 always trades below ES on 1 minute chart, short ER2 when they are touched.
This comparision also tells you if the market is bullish or bearish. If ER2 always bounce up after touched ES, it is bullish.
This is the morning chart: