Similar to how connectivity modulates bridge resonances effects, we have found that QI considerations must also be accounted for in the limit of large geometric distortions, which have been shown to greatly reduce chromophore-chromophore coupling. For example, in P-N-P, ). We note that due to the QI effect, SF is actually faster in 15N, where both chromophores are more twisted than in 16N, where only one chromophore is highly twisted. These trends agree with simple graphical models, even though the overall singlet fission rates are relatively low due to overall weak chromophore-chromophore coupling. The effect of weak electronic coupling in the highly distorted 15N connectivity has also been observed in single-molecule junction experiments. These results imply that quantum interference remains a strong effect in the limit of both strong and weak interchromophore coupling.