Reduced particle size is a proposed explanation for the improved ion conductivity in mechanically processed materials. Under the same pelletization conditions a smaller particle size facilitates compression and consolidation which improves the area-contact between particles and reduces the tortuosity for ion conduction. Famprikis and coworkers demonstrated that applying pressure during measurement on non-ball-milled (non-BM) Na3PS4 improved its observable conductivity by a factor of ~10 so that it matched the conductivity of ball milled (BM) Na3PS4. In contrast, applying pressure on the BM-Na3PS4 sample had a negligible effect on its conductivity. They concluded that the better conductivity of BM-Na3PS4 was a consequence of better compression/consolidation of the BM-Na3PS4 pellets used for EIS measurements. Inspired by this study, we investigated the conductivity of LNCl-I and LNCl-I-BM under pressure. We found that the conductivity of LNCl-I increased by a factor of ~2 (Figure ). In contrast, the ion conductivity of LNCl-I-BM hardly improved when applying pressure. We thus observe a similar trend to Famprikis and coworkers and explain our results as follows. For LNCl-I leeway for better consolidation was available and we observed an increase in conductivity when applying pressure. For the LNCl-I-BM sample, the conductivity hardly improved because the smaller particle size enabled near-optimal consolidation during pelletization. However, two observations indicate that the improved conductivity of LNCl-I-BM is not solely a consequence of better consolidation. (i) Despite the pressure-induced conductivity improvement of LNCl-I by a factor of 2, even under pressure, the conductivity of LNCl-I-BM is still higher by a factor of 5. (ii) An improved conductivity solely originating from superior consolidation would not be expected to show a change in activation energy but the Arrhenius fits in Figure clearly show that the activation energy for LNCl-I-BM is decreased by 40 meV as compared to LNCl-I.