If, within the prescribed time following service of the notice pursuant to Sec. 1246.1, the respondent has filed an answer which contests or denies any allegation in the notice, or a hearing is requested, a hearing pursuant to Sec. 1246.5 shall be conducted by an immigration judge, and the requirements contained in Sec. Sec. 1240.3, 1240.4, 1240.5, 1240.6, 1240.7, and 1240.9 of this chapter shall be followed.