Measurements from the joint modeling (combining all mass models) and lensing-only modeling. The shaded contours represent 1σ, 2σ, and 3σ confidence regions. The green contours correspond to the joint modeling using the ideal kinematic data, and the orange contours correspond to the joint modeling using kinematic data with a 5% systematic bias. The gray contours represent the lensing-only modeling. The red box indicates the degeneracy between D_Δt, int and λ_int in the lensing-only modeling.