Late this spring I'll need to do this transfer at BKK: from a flight on Thai Air Asia to a flight on Bangkok Airways.

Do both airlines operate out of the same terminal? Are they both at Don Muang?

Would any of you know on this board whether 2 hours is adequate to deplane, collect baggage, check in, and proceed to gate? Or would 3 hours provide a safer margin?

Thank very much in advance.