Yes, Awadh assam go via Barsoi, Kumedpur..
The standard check-out time in Darjeeling and Sikkim hotels is about 10-11 a.m., so travelers typically arrive at NJP/Siliguri between 2-3 p.m.
Many tourists stay back in Siliguri overnight to shop, see the zoo, and so on. So these tourists can also use this VB (which is the same as HWH Shatabdi).