On a CAL bike both of those vent lines do go back to the emis canister. Tha left one I think is marked with a blue band goes to the little nipple grommet at the base of the fuel cap. The one on the right with a red band am not sure how it inter connects with the tank, just know that it is internal.
04-3,200 miles bought July 2011 with 928 miles. Loaded with acessories to many to list here, see my albums for more details! I also make a custom tank bib specific for the 750 if anyone is interested, ck my albums for some pics.