Flying NRT - IAH and then IAH - AMS on 2 PNR's. Should have a 2 hour layover.... in fact, the NRT-IAH aircraft often continues on the AMS (I fly IAH-AMS regularly and the aircraft seems to come from NRT about 50% of the time at least).

Question is, how do I link these? Can GS handle or at least be made aware in case the connection is tight so I can get assistance? In the event that the NRT flight is delayed, they could easily pull another aircraft and then I'd be SOL. Also, in the event of major IRROPS, I could get rerouted out of NRT to AMS if they are linked.

thanks!