I think that, what we MAY have is a case of:
People die.
Most people's souls go to Sheol, some go directly to Heaven.
All the spirits go to heaven, except those spirits that were cast out or condemned.
Jesus has already brought up some sould from Sheol and sent them to Heaven to reunite with their spirits, but their bodies are still awating the ressurection.
Upon ressurection, spirits are reunited with soul and returned to ressurected body.