Enlarged view of the Fe XXVI Lyα absorption region in the phase-averaged XRISM/Resolve spectrum of AX J1745.6–2901. Top panel: the spectrum fitted with a single-velocity absorption model (thin purple) and a two-velocity-component model (thick purple). The vertical dashed lines indicate the rest-frame energies of the Fe XXVI Lyα₁ and α₂ transitions, shifted according to the best-fit Doppler velocities of the two components. Middle and lower panels: ratios of the data to the best-fit models for the single- and two-velocity-component cases, respectively. The two-component model significantly reduces the residuals around the Fe XXVI Lyα doublet. Bottom panel: ΔC-statistic improvement obtained by introducing an additional third velocity component as a function of its Doppler velocity. For each trial velocity, only the column density was allowed to vary while the velocity width was fixed to that of the other components. No statistically significant improvement is found at intermediate velocities, supporting the presence of two discrete velocity components rather than a continuous velocity distribution.