Lyman-alpha damping wing transmission at Δv = 200 km/s as a function of the distance of a galaxy from the nearest neutral patch and the IGM mean neutral fraction ${\overline{x}}_{\mathrm{H}\mathrm{I}}$. Top: Median transmission using inhomogeneous IGM simulations (Lu et al. 2024) Bottom: Transmission calculated using the analytic calculation by Miralda-Escude (1998), Dijkstra (2014). White lines show the mean bubble size as a function of ${\overline{x}}_{\mathrm{H}\mathrm{I}}$ predicted by Lu et al. (2024). Using the realistic simulations, it is is clear the distance to the first neutral patch dominates the transmission compared to the average IGM neutral fraction, ${\overline{x}}_{\mathrm{H}\mathrm{I}}$.