I have the following itineraries on separate tickets.
USM-BKK on PG arriving at BKK at 0705
BKK-CMB on UL departing BKK at 0915

http://www.bangkokair.com/eng/pages/...eck-in-through
It says "Bangkok Airways passengers having onward journey to some international destinations with participating carriers can choose to check through their baggage to final destination and complete immigration formality at Chiang Mai ,Chiang Rai ,Krabi ,Phuket ,Samui ,Trat and Udon thani. Passengers are then required to remain in the transfer area at Suvarnabhumi Airport."

But, doesnt say if the segments on participating carriers need to be on the same ticket or not.. Am I at the sole discretion of the gate agent at USM?

Worst case, is 2 hours enough to claim luggage and go to UL checkin counter factoring in the checkin cut off - assuming incoming flight is on time?

TIA!