It can be done after CPYZ , it can be diverted to third line and then stopped at one of the intermediate station for Shatabdi to pass …
Nevertheless both of these EMUs can be scheduled 15 mins early or late .. so that they may allow VBs to pass … many VB services on this route are still pending … which they will have to manage somehow ..
Using alternate route for North Bihar Bound and North east bound trains is another solution …