My friend and I are flying from 2 different points in Canada - Vancouver, BC and Ottawa ON - through LAX to Sydney, both of us with Delta. Our luggage will be checked through to Sydney so I don't believe we need to clear Customs in LA, Correct? On our return, arriving at 7:15 AM from Sydney, my layover is 2 hrs 55 min and I am flying a DeltaCompass flight to Vancouver. My friend has a Delta flight east connecting to Ottawa with a little less than 2 hours layover in LA. Do we have enough time to get through Immigration and Customs and catch our connecting flights?