Isoflux tension propagation (IFTP) theory and Langevin dynamics (LD) simulations are employed to study the of channel-driven polymer translocation in which a translocates into narrow channel monomers experience driving force ${f}_{\mathrm{c}}$. In high limit, regardless width, IFTP predicts $\ensuremath{\tau}\ensuremath{\propto}{f}_{\text{c}}^{\ensuremath{\beta}}$ for time, where $\ensuremath{\...