Two option chain together in split view

I am Nifty 50 option trader, but I have notice it that in morning first trade is best when I notice two market option chain together, it will show you what side market will go, basically I notice Nifty 50option chain and bank nifty oprion chain together, it help me to decide the market direction, when in morning both market show up side LTP, market will go CALL side in Nifty 50. Then I buy CALL option in Nifty 50.