We are working on an itinerary this fall which involves flying from Hanoi to Bangkok and then on the Yangoon. There is only one flight per day from Hanoi to Bangkok as best I can tell which arrives at 10:50am. Then there is only one flight per day from Bangkok to Yangoon which departs about an hour and 40 minutes later with another airline. I'm assuming since both flights are international that they will be at the same airport in Bangkok. Is this sufficient time to clear customs and immigration? Thank you.