Continuous measurement of hemodynamic signals during walking remains a challenge, as signals include motion-induced hemodynamic effects and measurement-based artifacts. In-ear photoplethysmography (PPG) has recently attracted increasing interest, driven by its strategic physiological location resulting in widespread integration with consumer applications; however, walking distorts signal quality. We aim to investigate the morphological beat-wise effect on ear-PPG and finger pressure (fiAP) pulse waveforms during heart-paced walking, stepping at a variable delay from the R-wave of the cardiac cycle. Nine healthy subjects (43±22 years) participated in the study. Participants walked in synch with their hearts for a total of 15 minutes. We measured morphology, including normalized amplitude and area under the curve (AUC), using a linear mixed-effects model and ANOVA, controlling for HR, inter-subject variability, step timing, and sensor location. We observed a strong delay-dependent modulation of waveform morphology in ear-PPG and fiAP, indicating presence of motion-induced hemodynamic effects. fiAP showed a progressive increase in AUC at higher delays. For ear-PPG, AUC was most strongly reduced when stepping at 40-50\% delay and recovered later, indicating a U-shaped behaviour across delays. Amplitude was mostly modulated in the ear and not in the finger. Our results suggest that in-ear PPG exhibits stronger step timing-dependent modulation compared to the finger, suggesting higher sensitivity to motion-related hemodynamic effects on the cardiovascular system.