Video link -
click hereA high speed WAP-7 rushes by with AC Special train (LHB Rake) bound to New Delhi as it crosses 15234 Darbhanga - Kolkata (Chitpur) Maithili Express in-between Samastipur - Barauni section. The blink of a signal can be seen in the initial seconds of this video for the train (February 27, 2019)