I would not assume you can through check the bags. Even if OS(?) allows this, it could be very dicey with 2 tickets to a regional airline.
Not a huge issue though. The full customs at BKK will most often cost you less than 30 minutes. A short walk from there over to the far end of domestic counters where PG lives to recheck. Only a few minutes from there to the gate.
I would allow 3 hours for the transit, but if you have 2+ hours I would not worry. Even if you miss, not the end of the world. Less than 2 hours is dicey.
EDIT: When flying on split tickets to multiple countries you should insure you are able to enter each country. Thailand is lax for most westerners with proof of an outgoing ticket.
Last edited by exwannabe; Jul 3, 2017 at 11:25 pm