Sealdah Rajdhani yet again covers ASN-DHN in 44 mins and DHN-GAYA in 2 hr 12 mins. It happens on a regular basis, have also observed many times while travelling. Train arrives DHN 10-15 mins before and close to 20-25 mins before at GAYA on a regular basis. Both ER King and Queen need a speedup of 20 and 30 mins respectively in DHN-GAYA section. Ahead running BBS Raj also has enough slack to get speeded up and have enough time to be ahead of both ER trains. Slack removal should be considered so these trains can compete with MMCT Rajdhani in terms of speed, and it is also achievable imo.