The oxygen hose is missing in the scene where Rico and Higgins enter the tunnel where the compressor is.
Higgins: (narrating) Now they call them Ice Bugs. They sleep for thousands, maybe millions, of years until a chance encounter brings them fuel for interstellar journey of unimaginable detestation. Ice Bugs destroyed whole planets and from what we found out later from the tracking scanner, the one we'd landed on had set a course for an unremarkable solar system, our solar system.
Razak: You're breathing oxygen now, sport, so you can stop acting like an imbecile.
Flores: Your timing stinks.
Doc: You mean you're already engaged?
Higgins: (recording a message on his camera) If you're watching this, it means Razak's Roughnecks have died, but perhaps not in vain if we can help you complete the mission we began. We were sent to collect samples of a naturally occurring bug poison form the surface of what we believed to be an asteroid. We now find ourselves deep underground, right in the heart of this place we now know is no place at all, but a living...bug?
Last episode of the Zephyr Campaign.