  The slow Debye-like relaxation in the dielectric spectra of monohydroxy
alcohols is a matter of long standing debate. In the present work, we probe
reorientational dynamics of 5-methyl-2-hexanol with dielectric spectroscopy and
depolarized light scattering (DDLS) in the supercooled regime. While in a
previous study of a primary alcohol no indication of the Debye peak in the DDLS
spectra was found, we now for the first time report clear evidence of a Debye
contribution in a monoalcohol in DDLS. A quantitative comparison between the
dielectric and DDLS manifestation of the Debye peak reveals that while the
dielectric Debye process represents fluctuations in the end-to-end vector
dipole moment of the transient chains, its occurrence in DDLS shows a more
local signature and is related to residual correlations which occur due to a
slight anisotropy of the $\alpha$-relaxation caused by the chain formation.
