I don't know where you got your numbers but they certainly don't reflect reality. As my cite says, they missed ~34 billion worth of payments. As your cite says they're missing 86 billion dollars that they need to pay their pension obligations.

>Please explain your use of the word "hypothetical".

Hypothetical as in they are not actual real outflows of cash from the USPS. They can't be blamed for the USPS' financial woes since they haven't made a payment in 7 years now.