S. 144B : Faceless Assessment-Principles of Natural justice-Ineffective hearing during video conferencing due to technical glitches-Order passed without granting requested rescheduling of video conference to explain complexity of material submitted-Assessment order and consequent notice of demand set Aside-The Department is at liberty to proceed with the assessment under the provisions of section 144B in accordance with law after issuance of show-cause notice-cum-draft assessment order and providing an opportunity of hearing to the assessee. [S. 143(3), 156, Art. 226]