Bhusawal Mail (1865) pave in Sectional Carriage ex BSL to NGP in Feb 1867 (Pic 1/2) & later extended to Calcutta (1893) Sectional Carriage ex NGP via ASN!!
Sectional Carriage arrangement exist in 1914 (Pic 2) which show 1 NGP Mail as through service which later bifurcated later (1961 Pic 4/5)as Calcutta Mail (1 Mail Status retained) & 39/40 Express (14:05 Dep & NGP ARR retained, 2nd train in Pic 5 is NGP Exp)!!
Pic 6 Display 1985 TT of 39/40 whose CSMT departure is as good till now!!