JOC diye soja pathano easy hobe. Extra reversal o lagbena in that case. Ei route ta shortest kintu constraints prochur royeche. Like Rake reversal at PRR, ANR-BURN congestion, BURN-ASN congestion etc. Effectively, ei route diye gele within 6 hrs ekta superfast train cover kore nebe I guess. Baki ER and SER jane technical byapar.