No lol thats not how the torque converter lockup clutch works. The cylinder shutdown does probably coincide with the TCC lockup, because the lockup functions at cruising speeds, however the sole function of the lockup clutch is to reduce heat, reduce wear, and make the transmission less likely to fail. TCC will continue to function in exactly the same manner regardless of DoD being enabled or not.
And FFDP, converters are a big failure point on this car, specifically the TCC lockup clutch. There is an inherent defect in the TCC lockup solenoid mechanism in the valve body that causes low TCC apply pressure and results in clutch failure and contamination of the fluid. It's one of the biggest failures dave over at TEP encounters. That's the reason why one of his biggest upgrades is the reworked TCC apply valve.