  The interplay of different emergent phenomena -- superconductivity (SC) and
domain formation -- appearing on different spatial and energy scales are
investigated using high-resolution scanning tunneling spectroscopy (STS) in the
prototypical transition metal dichalcogenide superconductor $1T$-TaSSe single
crystals ($T_{SC} = 3.2$ K) at temperatures from 1 to 20 K. Our major
observation is that while the SC gap size smoothly varies on the scale of
$\lesssim 10$ nm, its spatial distribution is not correlated to the domain
structure. On the other hand, there is statistically significant correlation of
the SC gap $\Delta_{SC}$ with spectral weight of the narrow band at the Fermi
level formed from the same Ta $5d$ orbitals as the Mott-Hubbard band. We show
that the narrow band follows the evolution of Hubbard bands in space, proving
unambiguously its relation to the charge order. The correlations between the
two suggest a non-trivial link between rapidly spatially varying charge order
and superconductivity common in many quantum materials, and high-temperature
superconductors in particular.
