As we can see in Fig. , although we have a "similar" phase transition at Lc ≈ 30 Å, we have no CQI features in conductivity. Instead, only a single discontinuous kink at Lc can be observed in Fig. (a), associated with two pairs of end states comprising the four frontier MOs from HOMO-1 to LUMO+1, shown in Fig. ). Yet, as in the case of the 13-AGNRs However, it could be also seen as a "through space" MOs interaction of the end-localized frontier MOs, involving electrons (and holes) localized in the same narrow region. The complete growth of the aromaticity pattern at Lc can be observed in Fig. (a). This pattern is now of the Clar type, involving unique Clar sextets, without migration of sextets. Thus, it is reasonable to conclude that migration of sextets is a key feature for the occurrence of CQI, which is separate from the "multi-transition" at Lc. The Clar type CIRCO aromaticity pattern is directly connected with the symmetry (parity) of the frontier orbitals, i.e. HOMO (and HOMO-2) with even parity, and LUMO (and LUMO+2) with odd parity, exactly oppositely of the 13-AGNRs. Moreover, since 15-AGNRs (similarly to 9-AGNRs) can be considered in some sense as more aromatic (on the basis of their Clar -aromaticity) in comparison to 13-AGNRs (like the 7-AGNRs), it should be expected that they would be characterized by much lower conductivity, and larger HOMO-LUMO gaps, which is consistent with the present findings, and earlier expectations. Finally, the criterion of ΔΕ0,1, discussed above, is emphatically not obeyed here, since ΔΕ0,1 is smaller than 0.005 eV (precisely zero for the relatively longer 15-AGNRs), as is illustrated in Fig. ), and more emphatically in Fig. of SI. This can further confirm the lack of CQI in 15-AGNRs, which of course could be also a direct consequence of the topology of the π-system 8 , i.e. the aromaticity pattern and the symmetry of the frontier MOs. Therefore, such unique CQI behavior should be clearly restricted to 13-AGNRs, with CO aromaticity pattern (characterized by the resonance between migration of sextets), and with two almost (but not exactly) degenerate pairs of HOMO and HOMO-1, as well as LUMO and LUMO+1 orbitals in the CQI region. In this novel system the two zigzag ends, in which the two pairs of end-localized-states reside, seem to effectively play the role of some kind of unusual "anchors".