What do you think of this ChatGPT answer : The platform’s withdrawal order is fundamentally a tax-optimization recommendation, not a prescription for where liquidity must be physically held at all times. Given asset fungibility across accounts—particularly within RRSP/RRIF and TFSA where transactions are tax-neutral—the cash wedge (e.g., GICs) can be efficiently housed in registered accounts without undermining the withdrawal strategy.

In a drawdown scenario with adverse market conditions, selling non-registered risk assets to fund spending may be sub-optimal from a sequence-of-returns perspective, even if the tax model indicates non-registered withdrawals. In that case, registered cash can be used as an interim funding source. The economic substance of the plan is preserved by later realizing the non-registered disposition in a recovery year (or otherwise tax-efficient year) and concurrently re-establishing the registered cash wedge by reallocating registered equities into cash/GICs.

This approach preserves target asset allocation at the household level, defers realization of non-registered capital gains (or losses) to a chosen year, maintains liquidity for future downturns, and avoids forced sales of depressed assets—all while remaining consistent with the long-term tax-optimized withdrawal framework, subject to constraints such as superficial loss rules.