One correction after checking Satelite View.: Katwa-BWN Line merge with BWN-HWH Chord Line & thats enough for any train to connect KWAE-BWN-HWH. We dont need every PF get connected for Branch Line but yes this connection will lead KWAE-BWN-HWH Link but not MLDT-KWAE-BWN coz its not feasible to commission circuitous route when direct connection exist!!