I've a similar question. I'm doing AMS - LHR (overnight) - SFO. I'll want my bags at LHR anyway so I don't want them checked through. I can get the LHR - SFO BP in the morning at T1. Can I OLCI for both sectors at once though? Flying AMS - LHR at 2105 and then onwards to SFO on the 10:50 flight.