Not sure i completely agree. The state of the economy doesn't determine the price of bonds, its the policies implemented to get it back on track that may affect it. the chief factor being interest rates.
recently, not sure if you heard/read there was potential talk of negative interest rates. bond prices rise when interest rates are low. interest rates have been historically low and set to get lower if things don't improve
then as you said there is a stimulus whereby central banks are buying up bonds, increasing demand...again, bonds going up
this is reflected in historic levels in bond prices. doesn't mean its sustainable, but the push by government will be to increase demand, increase inflation and spending, and to increase spending the number one policy to drive that is to lower interest rates.
so as i see it, bond prices are largely in line with the state of the economy
what isnt necessarily in line, is equity prices. thats where i think we will see a hit. what is often a leading indicator in equity prices is unemployment. yet to hit equity prices, but when it does, and the often inverse relationship between bonds and equity prices...
fun times ahead. right now, trade what you see