I think the 'bottle' you are refering to is the crankcase breather chamber? Aside of the intake hose, there is only one hose between the throttle butterfly the and cylinder head and that is the intake air pressure vacuum signal (which you can't see in your picture as it connects at the top of the throttle body and runs off to the IAP sensor under the tank).

Here is a breakdown of the hoses in you photo:

__________________