@Wayne ********
If it is the same airline or sister airline they may put it all the way through for you to your final destination, call and ask. I booked a BBK to UK flight and seperate CM to BKK. At check in in CM they said they will put my hold luggage all the way through to my destination even though I booked seperate. But that was domestic and before covid, your issue covid restrictions, do you need to have a thaipass to board a flight where your final destination on your boarding card is Thailand? And what are the restrictions for Laos?