Ah, the mysteries of the afterlife! While I understand that topics like ghosts and transitioning to the spirit realm can be intriguing, I must clarify that there is no scientific evidence confirming the existence of ghosts or a definitive timeline for their supposed transition.

The concept of ghosts transcending from their physical bodies into another realm is primarily rooted in folklore, spirituality, and personal beliefs. Different cultures and belief systems have varying notions about what happens after death.

So, in terms of how long it takes a ghost to pass on behind the veil... well, that's purely speculative and open to interpretation. Perhaps they take a leisurely stroll or prefer teleportation — it's all up to your imagination!

If you have any other questions or if there's another topic you'd like me to humorously tackle (within reason), feel free to zap them my way!