  Scale-Dependent Dynamic Alignment (SDDA) in Els\"asser field fluctuations is
theorized to suppress nonlinearities and modulate the energy spectrum. Limited
empirical evidence exists for SDDA within the solar wind turbulence's inertial
range. We analyzed data from the WIND mission to assess the effects of
compressibility, intermittency, and imbalance on SDDA. SDDA consistently
appears at energy-containing scales, with a trend toward misalignment at
inertial scales. Compressible fluctuations show no increased alignment;
however, their impact on SDDA's overall behavior is minimal. The alignment
angles inversely correlate with field gradient intensity, likely due to
"anomalous" or "counterpropagating" wave packet interactions. This suggests
that SDDA originates from mutual shearing of Els\"asser fields during
imbalanced ($\delta \boldsymbol{z}^{\pm} \gg \delta \boldsymbol{z}^{\mp}$)
interactions. Rigorous thresholding on field gradient intensity reveals SDDA
signatures across much of the inertial range. The scaling of Els\"asser
increments' alignment angle, $\Theta^{z}$, steepens with increasing global
Alfv\'enic imbalance, while the angle between magnetic and velocity field
increments, $\Theta^{ub}$, becomes shallower. $\Theta^{ub}$ only correlates
with global Els\"asser imbalance, steepening as the imbalance increases.
Furthermore, increasing alignment in $\Theta^{ub}$ persists deep into the
inertial range of balanced intervals but collapses at large scales for
imbalanced ones. Simplified theoretical analysis and modeling of
high-frequency, low-amplitude noise in the velocity field indicate significant
impacts on alignment angle measurements even at very low frequencies, with
effects growing as global imbalance increases.
