“…While there has been a recurring debate about the statistical significance of the quadrupole and the other outliers (notably, near the multipole moments 22 and 40) in the CMB angular power spectrum (see Refs. [6,7,8,9] and references therein), there has also been constant activity to understand possible underlying physical reasons for the outliers (see, for an inexhaustive list, Refs. [10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32]).…”