I managed to get two referrals and applied about two weeks ago. I think at least one was in the portal system. My problem now is that it seems as though I haven't been able to get any update from my referrers after the fact, but they were very enthusiastic about helping me, as one was my college classmate. 

I don't really want to bother them anymore, as it's out of their control in the HR system, yet I haven't heard from the team. One guy told me that it passed the initial screening and is now with a more senior person in specific verticals and gave me his name, but that has been about ten days ago, and I never even got a confirmation email that my application went through. 

I am thinking to contact this person who I got the name of from my friend, but I am wondering if it is normal that the recruiters take so long, and if it's a good idea to contact this person considering perhaps he would not like to be bothered (not an HR person you would find on the company website). What do I do?