2016~2021 Identify Rubber Hose Near Intake

2016 CX-9 GS-L
Hi Everyone,

Can anyone help identify this hose? A PCV maybe?


Also noticed there's some oil on it - is this normal?

I wiped it off and will observe how strong the "leak" is.

2019 CX9 GT AWD Sonic Silver
Just looked. Mine has a slight leak too. Gotta be normal. If you look closely at the white tip you can see a horizontal slit where the oil leaks out. Its normal. Otherwise I'm like you have no clue what it is.