Original Member, Ambassador: OneWorld Alliance
Join Date: May 1998
Location: Austin, TX, USA
Programs: AA ExecPlat & 3MM; Marriott Titanium
Posts: 1,015
Unless something has changed in the last 2 years, you do not need to clear Passport Control and customs, but you will have to go through security check again. Two hours should be more than enough.
If I remember correctly there is an IB lounge, but I'm not 100% sure.