If a biweekly Premium is started on the same slot, Duronto is likely to get GZB WAP-5 and GZB WAP-7 back as its link. And the same link will be used for Premium.
Narkeldanga ETS should gear up for maintenance of 3phase loco especially WAP-5. If this didnt happen, the link for SDAH Rajdhani too would become HWH WAP-4/7.