Was it here? Maybe like this? Hmm...

Doors in the world of form, from where they came from, were often two sided. Whether they were doors, gates, hatches, or other similar structures, they had a purpose. This place was not a door, but it should have one. Even without a form, it should have something like a door. It should have two actually if those that passed through came here before leaving. This place would be like a hallway or an airlock for those with form.

A better description would probably be like a pipe with a source valve and a destination valve. Those who came through filled the pipe and left.

If no one is coming and the valves are open or closed opposite to one another could I slip through by going into the place they were in while they were here?

They filled this place while they were here. Without them, I now fill this place. That must not be enough to slip through. They were often but not always emotional so that wasn't it. They were often... asleep. I am awake.

While I was always asleep when they came through, can I sleep now?

...

Meanwhile a monitor somewhere displayed "Transfer buffer error" resetting conversion sequence.