Win-win as usual
Earlier I had hypothesized that DNC was pulling a William Henry Harrison....
Bernie is 78 and had a heart attack or a "heart attack" during the campaign. He won't last much longer, and he knows it. VP Pete will be able to take over almost immediately, and Bernie's fans will fade away without resentment or resistance.
Now
somebody has the same thought about Biden....
Obama will pick the VP. Joe will do what he is told. He will leave the race for "health reasons" and the VP will become the nominee.
Hillary wins both ways. It doesn't matter if Biden or Bernie ends up as the "president". The VP will take over soon, either before or after the "election", and the followers of Biden or Bernie will fade out.
It's all about the Harrisons.