Snapshots of the ¹³CO channel maps at the systematic velocity for models with ﹩{\dot{M}}_{{\rm{in}}}=1{0}^{-8}\,{M}_{\odot }\,{{\rm{yr}}}^{-1}﹩ (top), 10⁻⁷ M_⊙ yr⁻¹ (middle), and 10⁻⁶ M_⊙ yr⁻¹ (bottom) after the cessation of infall. Streamer-induced kinematic signatures decay gradually, but their survival times increase with the mass infall rate.