Also speaking on Indb - Ujn line totally agree with you the work to be fast paced from INDB end instead of UJN end, in the meantime there is an alternative for INDB-UJN travel time reduction.
The INDB-UJN line via FTD to opened soon for passenger trains which got opened for freight trains on 1st march 2021 from this line INDB to UJN or UJN - INDB can be reached in 1 to 1hr15mins max because from this line the distance is 62 km only.