The total number of days on the chart shouldn’t make a difference. If the PPO settings are the same (12,26,9) then the PPO’s should be identical on two charts using the same time frame. Make sure that your PPO & signal line are both set to exponential & also make sure that the time frame on the chart of mine that you were referring to was indeed a 60-min chart.

I do see that “one more flush down to create a divergent low in SPY” scenario as quite likely although at this time, I’m probably close to 50/50 on whether that will happen or if the market reverse before SPY undercuts the recent lows.
I used to put a pretty big weighting on the predictive value of the yield curve inverting but not so much in the wake of the unprecedented QE by the global central banks which has caused some major distortions in the financial markets & maybe lead to false signals with yield curve inversion. Plus, I am usually more concerned with the 2 yr falling below the 10 yr. Another problem that I have is that everybody & their brother is talking about the yield curve inversion & how accurately it predicts recessions. Too many people using the same signal & it usually doesn’t work.

Also, a lot of people put weight on the inverted yield curves. Do you as well?

If all things play out, I see the final flush move to mark from an elliott perspective a primary wave 4 and we’ll be working on the final leg of the bull market with inverted yield curves flipping all playing out together with confluence.