Interestingly, the most significant changes in the hydrogen NMR trajectories do not occur at the transition state (TS) itself (structure No 9), but immediately after it (structure No 10). This observation can be attributed to the fact that structure No 10 represents the first configuration where the boat tip of the molecule tilts towards the flag carbons. As the molecular geometry rapidly adjusts after the TS, the hydrogens experience substantial alterations in their electronic environments, which is reflected in their NMR chemical shifts. The tilting of the boat-tip brings the hydrogens into closer proximity, increasing their interactions and contributing to the sharp changes in chemical shifts observed.