Amazon Brand Mama Bear Diapers – Buy two boxes with S&S – save 25-40%

Amazon is running a buy-$50-save-20% promotion, with many items also qualifying for subscribe and save discounts. Obviously no mixing possible with subscribe and save.
The buy-$50-save-20% offer:
https://smile.amazon.com/promotio…UPFQ62SVE1
For example Mama Bear Diapers size 3
https://smile.amazon.com/Amazon-B…B07SYCRR58
One box $32.79, two boxes $65.58 … this would qualify for 20% off – with subscribe and save another 5% off, with subscribe and save five items 20% off – total 40% … that would come to 12c/diaper.