SIN airport question
I have a strange situation here. I have ticket from JFK - SIN with Singapore Airlines, but then I have a separate ticket from Singapore to Guam with Thai Airways. It's not on one ticket, it's not a transit. Upon arrival at SIN, do I need to clear immigration or not to get my ticket to Guam? I am afraid we are losing time.
Can I just get ticket at Thai Airways counter in JFK so I don't have to go through immigration in SIN to get my ticket?