HELP! Mystery Hose?! [SOLVED]

[MiWiAu]

I was just putting the fascia back on my 2013 XSport after an oil catch can install when I found this mystery hose laying in the driveway. Can someone help me figure out what it's for? I don't recall removing anything this small.

I had the charge pipes at the front of the engine off for cleaning. Everything looks to be in place, and I can't figure out where it goes.

Any help would be greatly appreciated!

[MiWiAu]

I'm an idiot. Last weekend I extended the vent tube on my PTU. This is the old hose. It must have fallen off the tray on my rolling stool. The giveaway was the smell of nasty gear oil.

I was going nuts!

[SHOdded]

Glad you figured it out, I just couldn't figure out which hose atop the engine would fit!