Kolkata Is Capital Of West Bengal And Kolkata Is Famous For Its Many Iconic Locations Then Why No Rajdhani Duronto Shatabdi Originates From Kolkata Railway Station Why All Rajdhani Shatabdi Orignates From Howrah Sealdah Please Explain Also Explain Why Kolkata Isnt Called A Jn As From Here Lines Bifurcate To 3 Different Directions