I think I figured it out.
What was throwing me in the screencap above, with the same sell-side sim and buy-side sim values, for the >1.6750 (2PM), the simulated close price = 22.00 on the sell-side and the simulated close price = 17.00 on the buy side. So the at close the Simulated Sell Price > Simulated Buy Price, which should never be.
So, the way I’m understanding it now is the simulated close price on the “buy-side” (right) is the expected bid at close, and the simulated close price on the “sell-side” (left) is the expected ask at close.
The sim is telling you what you’ll be able to sell it back for if you’re long (working on the buy/right side), and what you’ll be able to buy it back for if you’re short (working on the sell/left side).
Hopefully my confusion over this will end up helping someone else.
Thanks Darrell