No individual shall receive both extended benefits and additional benefits during or in respect to the same week. An individual may become eligible to receive additional benefits under section 31-232a with respect to a week of unemployment only if he is not eligible to receive extended benefits under subsection (d) of section 31-222 and sections 31-231b, 31-232b to 31-232k, inclusive, subdivision (8) of subsection (a) of section 31-236 and section 31-250 with respect to such week.