Kairos transformed into his human form and entered the door while Sara entered the other one. As Sara had said, there was a random blue bar between them supported by a separate grey bar that seemed to keep it up.
Sara grabbed her end without much concern. When Kairos grabbed onto one end of the blue bar, he felt his fingers meld into the bar for a moment, which was a rather strange sensation.
And right after, a whistle rang out through the air, while the grey bar suddenly disappeared. The weight of the blue bar was nothing special, easily supported by both Sara and Kairos.
From there, they took steps forward. Karios saw his foot touch nothing and lose balance before falling forth.
He quickly stopped himself and spoke up as Sara took a step forth.
"There appears to be no floor ahead of me."
Sara seemed fine as she took a step forward though. She turned to look at him and chuckled.
"Oh, right, you also have to walk on a pole to move forth, but you can't see it."
So uh, it's been a while... I came back with some milk. If you don't understand, just uh, don't try to.