Looking at the interplay of the two pairs as reflected by our findings, we note that the DOS of Chl D1 Pheo D1 extends almost to 1 eV at the low energy end, whereas the DOS of the P D1 P D2 pair does not go below 1.5 eV. This implies that energy transfer from P D1 P D2 to Chl D1 Pheo D1 might be possible, allowing for charge separation in the S 1 state of Chl D1 Pheo D1 pair at the bottom of the energy funnel.